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Finding the Fourth Proportional to 162.38, 242.46 and 141.42

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Solution

The fourth proportional to 162.38, 242.46 and 141.42 is: 211.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.38 : 242.46 = 141.42 : x
  2. Step 2: Convert to fraction form
    162.38/242.46 = 141.42/x
  3. Step 3: Cross multiply
    162.38x = 242.46 × 141.42
  4. Step 4: Simplify right side
    162.38x = 34,287.48
  5. Step 5: Solve for x
    x = 34,287.48/162.38
  6. Step 6: Final answer
    x = 211.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.