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Finding the Fourth Proportional to 828.96, 1,144.08 and 535.08

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Solution

The fourth proportional to 828.96, 1,144.08 and 535.08 is: 738.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.96 : 1,144.08 = 535.08 : x
  2. Step 2: Convert to fraction form
    828.96/1,144.08 = 535.08/x
  3. Step 3: Cross multiply
    828.96x = 1,144.08 × 535.08
  4. Step 4: Simplify right side
    828.96x = 612,174.33
  5. Step 5: Solve for x
    x = 612,174.33/828.96
  6. Step 6: Final answer
    x = 738.48

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Half scale
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Double scale
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Similar ratio
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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.