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Finding the Fourth Proportional to 162.04, 243.10 and 89.75

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Solution

The fourth proportional to 162.04, 243.10 and 89.75 is: 134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.04 : 243.10 = 89.75 : x
  2. Step 2: Convert to fraction form
    162.04/243.10 = 89.75/x
  3. Step 3: Cross multiply
    162.04x = 243.10 × 89.75
  4. Step 4: Simplify right side
    162.04x = 21,818.23
  5. Step 5: Solve for x
    x = 21,818.23/162.04
  6. Step 6: Final answer
    x = 134.65

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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.