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Finding the Fourth Proportional to 398.56, 597.96 and 124.66

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Solution

The fourth proportional to 398.56, 597.96 and 124.66 is: 187.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.56 : 597.96 = 124.66 : x
  2. Step 2: Convert to fraction form
    398.56/597.96 = 124.66/x
  3. Step 3: Cross multiply
    398.56x = 597.96 × 124.66
  4. Step 4: Simplify right side
    398.56x = 74,541.69
  5. Step 5: Solve for x
    x = 74,541.69/398.56
  6. Step 6: Final answer
    x = 187.03

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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.