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Finding the Fourth Proportional to 725.08, 998.76 and 612.92

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Solution

The fourth proportional to 725.08, 998.76 and 612.92 is: 844.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.08 : 998.76 = 612.92 : x
  2. Step 2: Convert to fraction form
    725.08/998.76 = 612.92/x
  3. Step 3: Cross multiply
    725.08x = 998.76 × 612.92
  4. Step 4: Simplify right side
    725.08x = 612,153.99
  5. Step 5: Solve for x
    x = 612,153.99/725.08
  6. Step 6: Final answer
    x = 844.26

Related Problems

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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.