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Finding the Fourth Proportional to 542.28, 812.72 and 473.48

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Solution

The fourth proportional to 542.28, 812.72 and 473.48 is: 709.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.28 : 812.72 = 473.48 : x
  2. Step 2: Convert to fraction form
    542.28/812.72 = 473.48/x
  3. Step 3: Cross multiply
    542.28x = 812.72 × 473.48
  4. Step 4: Simplify right side
    542.28x = 384,806.67
  5. Step 5: Solve for x
    x = 384,806.67/542.28
  6. Step 6: Final answer
    x = 709.61

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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.