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Finding the Fourth Proportional to 657.98, 986.96 and 333.16

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Solution

The fourth proportional to 657.98, 986.96 and 333.16 is: 499.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.98 : 986.96 = 333.16 : x
  2. Step 2: Convert to fraction form
    657.98/986.96 = 333.16/x
  3. Step 3: Cross multiply
    657.98x = 986.96 × 333.16
  4. Step 4: Simplify right side
    657.98x = 328,815.59
  5. Step 5: Solve for x
    x = 328,815.59/657.98
  6. Step 6: Final answer
    x = 499.73

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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.