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Finding the Fourth Proportional to 384.49, 576.75 and 124.50

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Solution

The fourth proportional to 384.49, 576.75 and 124.50 is: 186.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.49 : 576.75 = 124.50 : x
  2. Step 2: Convert to fraction form
    384.49/576.75 = 124.50/x
  3. Step 3: Cross multiply
    384.49x = 576.75 × 124.50
  4. Step 4: Simplify right side
    384.49x = 71,803.60
  5. Step 5: Solve for x
    x = 71,803.60/384.49
  6. Step 6: Final answer
    x = 186.75

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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.