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Finding the Fourth Proportional to 543.67, 815.10 and 327.20

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Solution

The fourth proportional to 543.67, 815.10 and 327.20 is: 490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.67 : 815.10 = 327.20 : x
  2. Step 2: Convert to fraction form
    543.67/815.10 = 327.20/x
  3. Step 3: Cross multiply
    543.67x = 815.10 × 327.20
  4. Step 4: Simplify right side
    543.67x = 266,695.42
  5. Step 5: Solve for x
    x = 266,695.42/543.67
  6. Step 6: Final answer
    x = 490.55

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.