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Finding the Fourth Proportional to 552.96, 828.90 and 279.18

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Solution

The fourth proportional to 552.96, 828.90 and 279.18 is: 418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.96 : 828.90 = 279.18 : x
  2. Step 2: Convert to fraction form
    552.96/828.90 = 279.18/x
  3. Step 3: Cross multiply
    552.96x = 828.90 × 279.18
  4. Step 4: Simplify right side
    552.96x = 231,412.30
  5. Step 5: Solve for x
    x = 231,412.30/552.96
  6. Step 6: Final answer
    x = 418.50

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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.