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Finding the Fourth Proportional to 549.38, 823.36 and 289.24

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Solution

The fourth proportional to 549.38, 823.36 and 289.24 is: 433.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.38 : 823.36 = 289.24 : x
  2. Step 2: Convert to fraction form
    549.38/823.36 = 289.24/x
  3. Step 3: Cross multiply
    549.38x = 823.36 × 289.24
  4. Step 4: Simplify right side
    549.38x = 238,148.65
  5. Step 5: Solve for x
    x = 238,148.65/549.38
  6. Step 6: Final answer
    x = 433.49

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.