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Finding the Fourth Proportional to 546.81, 820.55 and 272.89

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Solution

The fourth proportional to 546.81, 820.55 and 272.89 is: 409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.81 : 820.55 = 272.89 : x
  2. Step 2: Convert to fraction form
    546.81/820.55 = 272.89/x
  3. Step 3: Cross multiply
    546.81x = 820.55 × 272.89
  4. Step 4: Simplify right side
    546.81x = 223,919.89
  5. Step 5: Solve for x
    x = 223,919.89/546.81
  6. Step 6: Final answer
    x = 409.50

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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.