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Finding the Fourth Proportional to 543.38, 748.81 and 346.55

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Solution

The fourth proportional to 543.38, 748.81 and 346.55 is: 477.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.38 : 748.81 = 346.55 : x
  2. Step 2: Convert to fraction form
    543.38/748.81 = 346.55/x
  3. Step 3: Cross multiply
    543.38x = 748.81 × 346.55
  4. Step 4: Simplify right side
    543.38x = 259,496.79
  5. Step 5: Solve for x
    x = 259,496.79/543.38
  6. Step 6: Final answer
    x = 477.56

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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.