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Finding the Fourth Proportional to 955.71, 1,432.17 and 608.49

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Solution

The fourth proportional to 955.71, 1,432.17 and 608.49 is: 911.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.71 : 1,432.17 = 608.49 : x
  2. Step 2: Convert to fraction form
    955.71/1,432.17 = 608.49/x
  3. Step 3: Cross multiply
    955.71x = 1,432.17 × 608.49
  4. Step 4: Simplify right side
    955.71x = 871,461.12
  5. Step 5: Solve for x
    x = 871,461.12/955.71
  6. Step 6: Final answer
    x = 911.85

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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.