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Finding the Fourth Proportional to 1,650.77, 2,278.08 and 904.79

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Solution

The fourth proportional to 1,650.77, 2,278.08 and 904.79 is: 1,248.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,650.77 : 2,278.08 = 904.79 : x
  2. Step 2: Convert to fraction form
    1,650.77/2,278.08 = 904.79/x
  3. Step 3: Cross multiply
    1,650.77x = 2,278.08 × 904.79
  4. Step 4: Simplify right side
    1,650.77x = 2,061,189.70
  5. Step 5: Solve for x
    x = 2,061,189.70/1,650.77
  6. Step 6: Final answer
    x = 1,248.63

Related Problems

Find fourth proportional to 825.38, 1,139.04 and 452.40
Half scale
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Double scale
Find fourth proportional to 1,651.77, 2,279.46 and 905.79
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.