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Finding the Fourth Proportional to 724.57, 993.38 and 711.44

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Solution

The fourth proportional to 724.57, 993.38 and 711.44 is: 975.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.57 : 993.38 = 711.44 : x
  2. Step 2: Convert to fraction form
    724.57/993.38 = 711.44/x
  3. Step 3: Cross multiply
    724.57x = 993.38 × 711.44
  4. Step 4: Simplify right side
    724.57x = 706,721.74
  5. Step 5: Solve for x
    x = 706,721.74/724.57
  6. Step 6: Final answer
    x = 975.37

Related Problems

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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 (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.