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Finding the Fourth Proportional to 927.07, 1,279.58 and 577.69

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Solution

The fourth proportional to 927.07, 1,279.58 and 577.69 is: 797.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.07 : 1,279.58 = 577.69 : x
  2. Step 2: Convert to fraction form
    927.07/1,279.58 = 577.69/x
  3. Step 3: Cross multiply
    927.07x = 1,279.58 × 577.69
  4. Step 4: Simplify right side
    927.07x = 739,194.48
  5. Step 5: Solve for x
    x = 739,194.48/927.07
  6. Step 6: Final answer
    x = 797.35

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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.