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Finding the Fourth Proportional to 243.50, 362.32 and 242.69

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Solution

The fourth proportional to 243.50, 362.32 and 242.69 is: 361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.50 : 362.32 = 242.69 : x
  2. Step 2: Convert to fraction form
    243.50/362.32 = 242.69/x
  3. Step 3: Cross multiply
    243.50x = 362.32 × 242.69
  4. Step 4: Simplify right side
    243.50x = 87,929.02
  5. Step 5: Solve for x
    x = 87,929.02/243.50
  6. Step 6: Final answer
    x = 361.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.