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Finding the Fourth Proportional to 409.53, 565.01 and 269.73

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Solution

The fourth proportional to 409.53, 565.01 and 269.73 is: 372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.53 : 565.01 = 269.73 : x
  2. Step 2: Convert to fraction form
    409.53/565.01 = 269.73/x
  3. Step 3: Cross multiply
    409.53x = 565.01 × 269.73
  4. Step 4: Simplify right side
    409.53x = 152,400.15
  5. Step 5: Solve for x
    x = 152,400.15/409.53
  6. Step 6: Final answer
    x = 372.13

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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.