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Finding the Fourth Proportional to 382.29, 527.60 and 242.40

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Solution

The fourth proportional to 382.29, 527.60 and 242.40 is: 334.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.29 : 527.60 = 242.40 : x
  2. Step 2: Convert to fraction form
    382.29/527.60 = 242.40/x
  3. Step 3: Cross multiply
    382.29x = 527.60 × 242.40
  4. Step 4: Simplify right side
    382.29x = 127,889.03
  5. Step 5: Solve for x
    x = 127,889.03/382.29
  6. Step 6: Final answer
    x = 334.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.