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Finding the Fourth Proportional to 564.32, 779.55 and 542.18

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Solution

The fourth proportional to 564.32, 779.55 and 542.18 is: 748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.32 : 779.55 = 542.18 : x
  2. Step 2: Convert to fraction form
    564.32/779.55 = 542.18/x
  3. Step 3: Cross multiply
    564.32x = 779.55 × 542.18
  4. Step 4: Simplify right side
    564.32x = 422,656.42
  5. Step 5: Solve for x
    x = 422,656.42/564.32
  6. Step 6: Final answer
    x = 748.97

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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.