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Finding the Fourth Proportional to 667.71, 999.93 and 614.25

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Solution

The fourth proportional to 667.71, 999.93 and 614.25 is: 919.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.71 : 999.93 = 614.25 : x
  2. Step 2: Convert to fraction form
    667.71/999.93 = 614.25/x
  3. Step 3: Cross multiply
    667.71x = 999.93 × 614.25
  4. Step 4: Simplify right side
    667.71x = 614,207.00
  5. Step 5: Solve for x
    x = 614,207.00/667.71
  6. Step 6: Final answer
    x = 919.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.