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Finding the Fourth Proportional to 162.38, 224.08 and 93.38

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Solution

The fourth proportional to 162.38, 224.08 and 93.38 is: 128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.38 : 224.08 = 93.38 : x
  2. Step 2: Convert to fraction form
    162.38/224.08 = 93.38/x
  3. Step 3: Cross multiply
    162.38x = 224.08 × 93.38
  4. Step 4: Simplify right side
    162.38x = 20,923.24
  5. Step 5: Solve for x
    x = 20,923.24/162.38
  6. Step 6: Final answer
    x = 128.86

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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.