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Finding the Fourth Proportional to 542.22, 812.65 and 295.42

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Solution

The fourth proportional to 542.22, 812.65 and 295.42 is: 442.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.22 : 812.65 = 295.42 : x
  2. Step 2: Convert to fraction form
    542.22/812.65 = 295.42/x
  3. Step 3: Cross multiply
    542.22x = 812.65 × 295.42
  4. Step 4: Simplify right side
    542.22x = 240,073.06
  5. Step 5: Solve for x
    x = 240,073.06/542.22
  6. Step 6: Final answer
    x = 442.76

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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.