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Finding the Fourth Proportional to 402.29, 603.62 and 158.75

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Solution

The fourth proportional to 402.29, 603.62 and 158.75 is: 238.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.29 : 603.62 = 158.75 : x
  2. Step 2: Convert to fraction form
    402.29/603.62 = 158.75/x
  3. Step 3: Cross multiply
    402.29x = 603.62 × 158.75
  4. Step 4: Simplify right side
    402.29x = 95,820.86
  5. Step 5: Solve for x
    x = 95,820.86/402.29
  6. Step 6: Final answer
    x = 238.19

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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.