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Finding the Fourth Proportional to 735.12, 1,101.60 and 542.88

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Solution

The fourth proportional to 735.12, 1,101.60 and 542.88 is: 813.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.12 : 1,101.60 = 542.88 : x
  2. Step 2: Convert to fraction form
    735.12/1,101.60 = 542.88/x
  3. Step 3: Cross multiply
    735.12x = 1,101.60 × 542.88
  4. Step 4: Simplify right side
    735.12x = 598,036.61
  5. Step 5: Solve for x
    x = 598,036.61/735.12
  6. Step 6: Final answer
    x = 813.52

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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.