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Finding the Fourth Proportional to 387.66, 581.53 and 250.97

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Solution

The fourth proportional to 387.66, 581.53 and 250.97 is: 376.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.66 : 581.53 = 250.97 : x
  2. Step 2: Convert to fraction form
    387.66/581.53 = 250.97/x
  3. Step 3: Cross multiply
    387.66x = 581.53 × 250.97
  4. Step 4: Simplify right side
    387.66x = 145,948.43
  5. Step 5: Solve for x
    x = 145,948.43/387.66
  6. Step 6: Final answer
    x = 376.48

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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.