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Finding the Fourth Proportional to 609.66, 839.88 and 516.11

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Solution

The fourth proportional to 609.66, 839.88 and 516.11 is: 711.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.66 : 839.88 = 516.11 : x
  2. Step 2: Convert to fraction form
    609.66/839.88 = 516.11/x
  3. Step 3: Cross multiply
    609.66x = 839.88 × 516.11
  4. Step 4: Simplify right side
    609.66x = 433,466.27
  5. Step 5: Solve for x
    x = 433,466.27/609.66
  6. Step 6: Final answer
    x = 711.00

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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.