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Finding the Fourth Proportional to 162.97, 225.23 and 130.16

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Solution

The fourth proportional to 162.97, 225.23 and 130.16 is: 179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.97 : 225.23 = 130.16 : x
  2. Step 2: Convert to fraction form
    162.97/225.23 = 130.16/x
  3. Step 3: Cross multiply
    162.97x = 225.23 × 130.16
  4. Step 4: Simplify right side
    162.97x = 29,315.85
  5. Step 5: Solve for x
    x = 29,315.85/162.97
  6. Step 6: Final answer
    x = 179.89

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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.