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Finding the Fourth Proportional to 162.62, 224.34 and 140.76

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Solution

The fourth proportional to 162.62, 224.34 and 140.76 is: 194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.62 : 224.34 = 140.76 : x
  2. Step 2: Convert to fraction form
    162.62/224.34 = 140.76/x
  3. Step 3: Cross multiply
    162.62x = 224.34 × 140.76
  4. Step 4: Simplify right side
    162.62x = 31,578.10
  5. Step 5: Solve for x
    x = 31,578.10/162.62
  6. Step 6: Final answer
    x = 194.18

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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.