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Finding the Fourth Proportional to 543.66, 748.80 and 427.02

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Solution

The fourth proportional to 543.66, 748.80 and 427.02 is: 588.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.66 : 748.80 = 427.02 : x
  2. Step 2: Convert to fraction form
    543.66/748.80 = 427.02/x
  3. Step 3: Cross multiply
    543.66x = 748.80 × 427.02
  4. Step 4: Simplify right side
    543.66x = 319,752.58
  5. Step 5: Solve for x
    x = 319,752.58/543.66
  6. Step 6: Final answer
    x = 588.15

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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.