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Finding the Fourth Proportional to 655.71, 983.70 and 216.97

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Solution

The fourth proportional to 655.71, 983.70 and 216.97 is: 325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.71 : 983.70 = 216.97 : x
  2. Step 2: Convert to fraction form
    655.71/983.70 = 216.97/x
  3. Step 3: Cross multiply
    655.71x = 983.70 × 216.97
  4. Step 4: Simplify right side
    655.71x = 213,433.39
  5. Step 5: Solve for x
    x = 213,433.39/655.71
  6. Step 6: Final answer
    x = 325.50

Related Problems

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