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Finding the Fourth Proportional to 549.11, 823.61 and 275.15

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Solution

The fourth proportional to 549.11, 823.61 and 275.15 is: 412.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.11 : 823.61 = 275.15 : x
  2. Step 2: Convert to fraction form
    549.11/823.61 = 275.15/x
  3. Step 3: Cross multiply
    549.11x = 823.61 × 275.15
  4. Step 4: Simplify right side
    549.11x = 226,614.92
  5. Step 5: Solve for x
    x = 226,614.92/549.11
  6. Step 6: Final answer
    x = 412.69

Related Problems

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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.