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Finding the Fourth Proportional to 162.29, 243.44 and 40.55

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Solution

The fourth proportional to 162.29, 243.44 and 40.55 is: 60.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.29 : 243.44 = 40.55 : x
  2. Step 2: Convert to fraction form
    162.29/243.44 = 40.55/x
  3. Step 3: Cross multiply
    162.29x = 243.44 × 40.55
  4. Step 4: Simplify right side
    162.29x = 9,871.29
  5. Step 5: Solve for x
    x = 9,871.29/162.29
  6. Step 6: Final answer
    x = 60.83

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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.