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Finding the Fourth Proportional to 547.80, 821.18 and 273.62

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Solution

The fourth proportional to 547.80, 821.18 and 273.62 is: 410.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.80 : 821.18 = 273.62 : x
  2. Step 2: Convert to fraction form
    547.80/821.18 = 273.62/x
  3. Step 3: Cross multiply
    547.80x = 821.18 × 273.62
  4. Step 4: Simplify right side
    547.80x = 224,685.80
  5. Step 5: Solve for x
    x = 224,685.80/547.80
  6. Step 6: Final answer
    x = 410.16

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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.