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Finding the Fourth Proportional to 542.95, 749.30 and 426.31

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Solution

The fourth proportional to 542.95, 749.30 and 426.31 is: 588.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.95 : 749.30 = 426.31 : x
  2. Step 2: Convert to fraction form
    542.95/749.30 = 426.31/x
  3. Step 3: Cross multiply
    542.95x = 749.30 × 426.31
  4. Step 4: Simplify right side
    542.95x = 319,434.08
  5. Step 5: Solve for x
    x = 319,434.08/542.95
  6. Step 6: Final answer
    x = 588.33

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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.