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Finding the Fourth Proportional to 162.57, 224.41 and 103.61

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Solution

The fourth proportional to 162.57, 224.41 and 103.61 is: 143.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.57 : 224.41 = 103.61 : x
  2. Step 2: Convert to fraction form
    162.57/224.41 = 103.61/x
  3. Step 3: Cross multiply
    162.57x = 224.41 × 103.61
  4. Step 4: Simplify right side
    162.57x = 23,251.12
  5. Step 5: Solve for x
    x = 23,251.12/162.57
  6. Step 6: Final answer
    x = 143.02

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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.