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Finding the Fourth Proportional to 162.64, 224.72 and 113.52

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Solution

The fourth proportional to 162.64, 224.72 and 113.52 is: 156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.64 : 224.72 = 113.52 : x
  2. Step 2: Convert to fraction form
    162.64/224.72 = 113.52/x
  3. Step 3: Cross multiply
    162.64x = 224.72 × 113.52
  4. Step 4: Simplify right side
    162.64x = 25,510.21
  5. Step 5: Solve for x
    x = 25,510.21/162.64
  6. Step 6: Final answer
    x = 156.85

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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.