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Finding the Fourth Proportional to 402.12, 602.92 and 158.37

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Solution

The fourth proportional to 402.12, 602.92 and 158.37 is: 237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.12 : 602.92 = 158.37 : x
  2. Step 2: Convert to fraction form
    402.12/602.92 = 158.37/x
  3. Step 3: Cross multiply
    402.12x = 602.92 × 158.37
  4. Step 4: Simplify right side
    402.12x = 95,484.44
  5. Step 5: Solve for x
    x = 95,484.44/402.12
  6. Step 6: Final answer
    x = 237.45

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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.