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Finding the Fourth Proportional to 242.18, 363.33 and 105.19

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Solution

The fourth proportional to 242.18, 363.33 and 105.19 is: 157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.18 : 363.33 = 105.19 : x
  2. Step 2: Convert to fraction form
    242.18/363.33 = 105.19/x
  3. Step 3: Cross multiply
    242.18x = 363.33 × 105.19
  4. Step 4: Simplify right side
    242.18x = 38,218.68
  5. Step 5: Solve for x
    x = 38,218.68/242.18
  6. Step 6: Final answer
    x = 157.81

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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.