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Finding the Fourth Proportional to 549.46, 823.84 and 275.40

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Solution

The fourth proportional to 549.46, 823.84 and 275.40 is: 412.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.46 : 823.84 = 275.40 : x
  2. Step 2: Convert to fraction form
    549.46/823.84 = 275.40/x
  3. Step 3: Cross multiply
    549.46x = 823.84 × 275.40
  4. Step 4: Simplify right side
    549.46x = 226,885.54
  5. Step 5: Solve for x
    x = 226,885.54/549.46
  6. Step 6: Final answer
    x = 412.92

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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.