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Finding the Fourth Proportional to 514.85, 709.73 and 409.97

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Solution

The fourth proportional to 514.85, 709.73 and 409.97 is: 565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.85 : 709.73 = 409.97 : x
  2. Step 2: Convert to fraction form
    514.85/709.73 = 409.97/x
  3. Step 3: Cross multiply
    514.85x = 709.73 × 409.97
  4. Step 4: Simplify right side
    514.85x = 290,962.41
  5. Step 5: Solve for x
    x = 290,962.41/514.85
  6. Step 6: Final answer
    x = 565.15

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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.