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Finding the Fourth Proportional to 543.04, 748.38 and 387.52

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Solution

The fourth proportional to 543.04, 748.38 and 387.52 is: 534.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.04 : 748.38 = 387.52 : x
  2. Step 2: Convert to fraction form
    543.04/748.38 = 387.52/x
  3. Step 3: Cross multiply
    543.04x = 748.38 × 387.52
  4. Step 4: Simplify right side
    543.04x = 290,012.22
  5. Step 5: Solve for x
    x = 290,012.22/543.04
  6. Step 6: Final answer
    x = 534.05

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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.