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Finding the Fourth Proportional to 363.39, 545.15 and 120.08

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Solution

The fourth proportional to 363.39, 545.15 and 120.08 is: 180.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.39 : 545.15 = 120.08 : x
  2. Step 2: Convert to fraction form
    363.39/545.15 = 120.08/x
  3. Step 3: Cross multiply
    363.39x = 545.15 × 120.08
  4. Step 4: Simplify right side
    363.39x = 65,461.01
  5. Step 5: Solve for x
    x = 65,461.01/363.39
  6. Step 6: Final answer
    x = 180.14

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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.