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Finding the Fourth Proportional to 409.76, 565.42 and 252.36

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Solution

The fourth proportional to 409.76, 565.42 and 252.36 is: 348.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.76 : 565.42 = 252.36 : x
  2. Step 2: Convert to fraction form
    409.76/565.42 = 252.36/x
  3. Step 3: Cross multiply
    409.76x = 565.42 × 252.36
  4. Step 4: Simplify right side
    409.76x = 142,690.80
  5. Step 5: Solve for x
    x = 142,690.80/409.76
  6. Step 6: Final answer
    x = 348.23

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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.