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Finding the Fourth Proportional to 883.77, 1,219.61 and 490.76

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Solution

The fourth proportional to 883.77, 1,219.61 and 490.76 is: 677.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.77 : 1,219.61 = 490.76 : x
  2. Step 2: Convert to fraction form
    883.77/1,219.61 = 490.76/x
  3. Step 3: Cross multiply
    883.77x = 1,219.61 × 490.76
  4. Step 4: Simplify right side
    883.77x = 598,535.80
  5. Step 5: Solve for x
    x = 598,535.80/883.77
  6. Step 6: Final answer
    x = 677.25

Related Problems

Find fourth proportional to 441.89, 609.81 and 245.38
Half scale
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Double scale
Find fourth proportional to 884.77, 1,220.99 and 491.76
Similar ratio
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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.