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Finding the Fourth Proportional to 242.17, 363.26 and 103.31

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Solution

The fourth proportional to 242.17, 363.26 and 103.31 is: 154.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.17 : 363.26 = 103.31 : x
  2. Step 2: Convert to fraction form
    242.17/363.26 = 103.31/x
  3. Step 3: Cross multiply
    242.17x = 363.26 × 103.31
  4. Step 4: Simplify right side
    242.17x = 37,527.90
  5. Step 5: Solve for x
    x = 37,527.90/242.17
  6. Step 6: Final answer
    x = 154.96

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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.