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Finding the Fourth Proportional to 833.56, 1,149.60 and 658.60

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Solution

The fourth proportional to 833.56, 1,149.60 and 658.60 is: 908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.56 : 1,149.60 = 658.60 : x
  2. Step 2: Convert to fraction form
    833.56/1,149.60 = 658.60/x
  3. Step 3: Cross multiply
    833.56x = 1,149.60 × 658.60
  4. Step 4: Simplify right side
    833.56x = 757,126.56
  5. Step 5: Solve for x
    x = 757,126.56/833.56
  6. Step 6: Final answer
    x = 908.30

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1.5x scale

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.