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Finding the Fourth Proportional to 242.27, 334.46 and 186.88

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Solution

The fourth proportional to 242.27, 334.46 and 186.88 is: 257.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.27 : 334.46 = 186.88 : x
  2. Step 2: Convert to fraction form
    242.27/334.46 = 186.88/x
  3. Step 3: Cross multiply
    242.27x = 334.46 × 186.88
  4. Step 4: Simplify right side
    242.27x = 62,503.88
  5. Step 5: Solve for x
    x = 62,503.88/242.27
  6. Step 6: Final answer
    x = 257.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.