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Finding the Fourth Proportional to 242.12, 363.06 and 87.94

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Solution

The fourth proportional to 242.12, 363.06 and 87.94 is: 131.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.12 : 363.06 = 87.94 : x
  2. Step 2: Convert to fraction form
    242.12/363.06 = 87.94/x
  3. Step 3: Cross multiply
    242.12x = 363.06 × 87.94
  4. Step 4: Simplify right side
    242.12x = 31,925.87
  5. Step 5: Solve for x
    x = 31,925.87/242.12
  6. Step 6: Final answer
    x = 131.86

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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.