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Finding the Fourth Proportional to 712.76, 980.46 and 672.44

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Solution

The fourth proportional to 712.76, 980.46 and 672.44 is: 925.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.76 : 980.46 = 672.44 : x
  2. Step 2: Convert to fraction form
    712.76/980.46 = 672.44/x
  3. Step 3: Cross multiply
    712.76x = 980.46 × 672.44
  4. Step 4: Simplify right side
    712.76x = 659,295.62
  5. Step 5: Solve for x
    x = 659,295.62/712.76
  6. Step 6: Final answer
    x = 925.00

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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.