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Finding the Fourth Proportional to 617.99, 926.16 and 270.80

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Solution

The fourth proportional to 617.99, 926.16 and 270.80 is: 405.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.99 : 926.16 = 270.80 : x
  2. Step 2: Convert to fraction form
    617.99/926.16 = 270.80/x
  3. Step 3: Cross multiply
    617.99x = 926.16 × 270.80
  4. Step 4: Simplify right side
    617.99x = 250,799.50
  5. Step 5: Solve for x
    x = 250,799.50/617.99
  6. Step 6: Final answer
    x = 405.83

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Half scale
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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.