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Finding the Fourth Proportional to 162.23, 243.59 and 66.23

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Solution

The fourth proportional to 162.23, 243.59 and 66.23 is: 99.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.23 : 243.59 = 66.23 : x
  2. Step 2: Convert to fraction form
    162.23/243.59 = 66.23/x
  3. Step 3: Cross multiply
    162.23x = 243.59 × 66.23
  4. Step 4: Simplify right side
    162.23x = 16,132.97
  5. Step 5: Solve for x
    x = 16,132.97/162.23
  6. Step 6: Final answer
    x = 99.45

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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.