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Finding the Fourth Proportional to 924.28, 1,275.92 and 609.73

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Solution

The fourth proportional to 924.28, 1,275.92 and 609.73 is: 841.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.28 : 1,275.92 = 609.73 : x
  2. Step 2: Convert to fraction form
    924.28/1,275.92 = 609.73/x
  3. Step 3: Cross multiply
    924.28x = 1,275.92 × 609.73
  4. Step 4: Simplify right side
    924.28x = 777,962.75
  5. Step 5: Solve for x
    x = 777,962.75/924.28
  6. Step 6: Final answer
    x = 841.70

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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.