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Finding the Fourth Proportional to 410.72, 566.87 and 280.17

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Solution

The fourth proportional to 410.72, 566.87 and 280.17 is: 386.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.72 : 566.87 = 280.17 : x
  2. Step 2: Convert to fraction form
    410.72/566.87 = 280.17/x
  3. Step 3: Cross multiply
    410.72x = 566.87 × 280.17
  4. Step 4: Simplify right side
    410.72x = 158,818.57
  5. Step 5: Solve for x
    x = 158,818.57/410.72
  6. Step 6: Final answer
    x = 386.69

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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.