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Finding the Fourth Proportional to 242.29, 362.77 and 126.49

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Solution

The fourth proportional to 242.29, 362.77 and 126.49 is: 189.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.29 : 362.77 = 126.49 : x
  2. Step 2: Convert to fraction form
    242.29/362.77 = 126.49/x
  3. Step 3: Cross multiply
    242.29x = 362.77 × 126.49
  4. Step 4: Simplify right side
    242.29x = 45,886.78
  5. Step 5: Solve for x
    x = 45,886.78/242.29
  6. Step 6: Final answer
    x = 189.39

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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.