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Finding the Fourth Proportional to 748.35, 1,032.08 and 538.43

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Solution

The fourth proportional to 748.35, 1,032.08 and 538.43 is: 742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.35 : 1,032.08 = 538.43 : x
  2. Step 2: Convert to fraction form
    748.35/1,032.08 = 538.43/x
  3. Step 3: Cross multiply
    748.35x = 1,032.08 × 538.43
  4. Step 4: Simplify right side
    748.35x = 555,694.98
  5. Step 5: Solve for x
    x = 555,694.98/748.35
  6. Step 6: Final answer
    x = 742.56

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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.