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Finding the Fourth Proportional to 747.30, 1,119.89 and 637.04

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Solution

The fourth proportional to 747.30, 1,119.89 and 637.04 is: 954.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.30 : 1,119.89 = 637.04 : x
  2. Step 2: Convert to fraction form
    747.30/1,119.89 = 637.04/x
  3. Step 3: Cross multiply
    747.30x = 1,119.89 × 637.04
  4. Step 4: Simplify right side
    747.30x = 713,414.73
  5. Step 5: Solve for x
    x = 713,414.73/747.30
  6. Step 6: Final answer
    x = 954.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.