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Finding the Fourth Proportional to 242.19, 362.61 and 188.19

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Solution

The fourth proportional to 242.19, 362.61 and 188.19 is: 281.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.19 : 362.61 = 188.19 : x
  2. Step 2: Convert to fraction form
    242.19/362.61 = 188.19/x
  3. Step 3: Cross multiply
    242.19x = 362.61 × 188.19
  4. Step 4: Simplify right side
    242.19x = 68,239.58
  5. Step 5: Solve for x
    x = 68,239.58/242.19
  6. Step 6: Final answer
    x = 281.76

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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.