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Finding the Fourth Proportional to 162.15, 223.57 and 130.96

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Solution

The fourth proportional to 162.15, 223.57 and 130.96 is: 180.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.15 : 223.57 = 130.96 : x
  2. Step 2: Convert to fraction form
    162.15/223.57 = 130.96/x
  3. Step 3: Cross multiply
    162.15x = 223.57 × 130.96
  4. Step 4: Simplify right side
    162.15x = 29,279.49
  5. Step 5: Solve for x
    x = 29,279.49/162.15
  6. Step 6: Final answer
    x = 180.58

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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.