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Finding the Fourth Proportional to 903.29, 1,246.56 and 499.53

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Solution

The fourth proportional to 903.29, 1,246.56 and 499.53 is: 689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.29 : 1,246.56 = 499.53 : x
  2. Step 2: Convert to fraction form
    903.29/1,246.56 = 499.53/x
  3. Step 3: Cross multiply
    903.29x = 1,246.56 × 499.53
  4. Step 4: Simplify right side
    903.29x = 622,694.12
  5. Step 5: Solve for x
    x = 622,694.12/903.29
  6. Step 6: Final answer
    x = 689.36

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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.