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Finding the Fourth Proportional to 410.53, 566.99 and 279.31

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Solution

The fourth proportional to 410.53, 566.99 and 279.31 is: 385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.53 : 566.99 = 279.31 : x
  2. Step 2: Convert to fraction form
    410.53/566.99 = 279.31/x
  3. Step 3: Cross multiply
    410.53x = 566.99 × 279.31
  4. Step 4: Simplify right side
    410.53x = 158,365.98
  5. Step 5: Solve for x
    x = 158,365.98/410.53
  6. Step 6: Final answer
    x = 385.76

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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.