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Finding the Fourth Proportional to 242.48, 362.91 and 187.94

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Solution

The fourth proportional to 242.48, 362.91 and 187.94 is: 281.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.48 : 362.91 = 187.94 : x
  2. Step 2: Convert to fraction form
    242.48/362.91 = 187.94/x
  3. Step 3: Cross multiply
    242.48x = 362.91 × 187.94
  4. Step 4: Simplify right side
    242.48x = 68,205.31
  5. Step 5: Solve for x
    x = 68,205.31/242.48
  6. Step 6: Final answer
    x = 281.28

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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.