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Finding the Fourth Proportional to 162.27, 243.48 and 89.14

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Solution

The fourth proportional to 162.27, 243.48 and 89.14 is: 133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.27 : 243.48 = 89.14 : x
  2. Step 2: Convert to fraction form
    162.27/243.48 = 89.14/x
  3. Step 3: Cross multiply
    162.27x = 243.48 × 89.14
  4. Step 4: Simplify right side
    162.27x = 21,703.81
  5. Step 5: Solve for x
    x = 21,703.81/162.27
  6. Step 6: Final answer
    x = 133.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.