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Finding the Fourth Proportional to 547.38, 821.12 and 273.46

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Solution

The fourth proportional to 547.38, 821.12 and 273.46 is: 410.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.38 : 821.12 = 273.46 : x
  2. Step 2: Convert to fraction form
    547.38/821.12 = 273.46/x
  3. Step 3: Cross multiply
    547.38x = 821.12 × 273.46
  4. Step 4: Simplify right side
    547.38x = 224,543.48
  5. Step 5: Solve for x
    x = 224,543.48/547.38
  6. Step 6: Final answer
    x = 410.21

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.