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Finding the Fourth Proportional to 655.81, 988.33 and 614.80

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Solution

The fourth proportional to 655.81, 988.33 and 614.80 is: 926.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.81 : 988.33 = 614.80 : x
  2. Step 2: Convert to fraction form
    655.81/988.33 = 614.80/x
  3. Step 3: Cross multiply
    655.81x = 988.33 × 614.80
  4. Step 4: Simplify right side
    655.81x = 607,625.28
  5. Step 5: Solve for x
    x = 607,625.28/655.81
  6. Step 6: Final answer
    x = 926.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.