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Finding the Fourth Proportional to 884.92, 1,221.38 and 535.52

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Solution

The fourth proportional to 884.92, 1,221.38 and 535.52 is: 739.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.92 : 1,221.38 = 535.52 : x
  2. Step 2: Convert to fraction form
    884.92/1,221.38 = 535.52/x
  3. Step 3: Cross multiply
    884.92x = 1,221.38 × 535.52
  4. Step 4: Simplify right side
    884.92x = 654,073.42
  5. Step 5: Solve for x
    x = 654,073.42/884.92
  6. Step 6: Final answer
    x = 739.13

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Half scale
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Double scale
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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.