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Finding the Fourth Proportional to 585.50, 878.13 and 220.16

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Solution

The fourth proportional to 585.50, 878.13 and 220.16 is: 330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.50 : 878.13 = 220.16 : x
  2. Step 2: Convert to fraction form
    585.50/878.13 = 220.16/x
  3. Step 3: Cross multiply
    585.50x = 878.13 × 220.16
  4. Step 4: Simplify right side
    585.50x = 193,331.30
  5. Step 5: Solve for x
    x = 193,331.30/585.50
  6. Step 6: Final answer
    x = 330.20

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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.