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Finding the Fourth Proportional to 887.75, 1,336.78 and 658.27

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Solution

The fourth proportional to 887.75, 1,336.78 and 658.27 is: 991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.75 : 1,336.78 = 658.27 : x
  2. Step 2: Convert to fraction form
    887.75/1,336.78 = 658.27/x
  3. Step 3: Cross multiply
    887.75x = 1,336.78 × 658.27
  4. Step 4: Simplify right side
    887.75x = 879,962.17
  5. Step 5: Solve for x
    x = 879,962.17/887.75
  6. Step 6: Final answer
    x = 991.23

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1.5x scale

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.