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Finding the Fourth Proportional to 617.80, 926.68 and 252.49

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Solution

The fourth proportional to 617.80, 926.68 and 252.49 is: 378.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.80 : 926.68 = 252.49 : x
  2. Step 2: Convert to fraction form
    617.80/926.68 = 252.49/x
  3. Step 3: Cross multiply
    617.80x = 926.68 × 252.49
  4. Step 4: Simplify right side
    617.80x = 233,977.43
  5. Step 5: Solve for x
    x = 233,977.43/617.80
  6. Step 6: Final answer
    x = 378.73

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.