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Finding the Fourth Proportional to 242.04, 363.10 and 79.72

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Solution

The fourth proportional to 242.04, 363.10 and 79.72 is: 119.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.04 : 363.10 = 79.72 : x
  2. Step 2: Convert to fraction form
    242.04/363.10 = 79.72/x
  3. Step 3: Cross multiply
    242.04x = 363.10 × 79.72
  4. Step 4: Simplify right side
    242.04x = 28,946.33
  5. Step 5: Solve for x
    x = 28,946.33/242.04
  6. Step 6: Final answer
    x = 119.59

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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.