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Finding the Fourth Proportional to 384.49, 576.82 and 141.02

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Solution

The fourth proportional to 384.49, 576.82 and 141.02 is: 211.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.49 : 576.82 = 141.02 : x
  2. Step 2: Convert to fraction form
    384.49/576.82 = 141.02/x
  3. Step 3: Cross multiply
    384.49x = 576.82 × 141.02
  4. Step 4: Simplify right side
    384.49x = 81,343.16
  5. Step 5: Solve for x
    x = 81,343.16/384.49
  6. Step 6: Final answer
    x = 211.56

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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.