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Finding the Fourth Proportional to 242.47, 363.70 and 98.19

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Solution

The fourth proportional to 242.47, 363.70 and 98.19 is: 147.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.47 : 363.70 = 98.19 : x
  2. Step 2: Convert to fraction form
    242.47/363.70 = 98.19/x
  3. Step 3: Cross multiply
    242.47x = 363.70 × 98.19
  4. Step 4: Simplify right side
    242.47x = 35,711.70
  5. Step 5: Solve for x
    x = 35,711.70/242.47
  6. Step 6: Final answer
    x = 147.28

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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.