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Finding the Fourth Proportional to 716.76, 985.98 and 676.44

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Solution

The fourth proportional to 716.76, 985.98 and 676.44 is: 930.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.76 : 985.98 = 676.44 : x
  2. Step 2: Convert to fraction form
    716.76/985.98 = 676.44/x
  3. Step 3: Cross multiply
    716.76x = 985.98 × 676.44
  4. Step 4: Simplify right side
    716.76x = 666,956.31
  5. Step 5: Solve for x
    x = 666,956.31/716.76
  6. Step 6: Final answer
    x = 930.52

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