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Finding the Fourth Proportional to 901.48, 1,347.25 and 658.60

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Solution

The fourth proportional to 901.48, 1,347.25 and 658.60 is: 984.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.48 : 1,347.25 = 658.60 : x
  2. Step 2: Convert to fraction form
    901.48/1,347.25 = 658.60/x
  3. Step 3: Cross multiply
    901.48x = 1,347.25 × 658.60
  4. Step 4: Simplify right side
    901.48x = 887,298.85
  5. Step 5: Solve for x
    x = 887,298.85/901.48
  6. Step 6: Final answer
    x = 984.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.