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Finding the Fourth Proportional to 541.50, 747.19 and 305.41

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Solution

The fourth proportional to 541.50, 747.19 and 305.41 is: 421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.50 : 747.19 = 305.41 : x
  2. Step 2: Convert to fraction form
    541.50/747.19 = 305.41/x
  3. Step 3: Cross multiply
    541.50x = 747.19 × 305.41
  4. Step 4: Simplify right side
    541.50x = 228,195.56
  5. Step 5: Solve for x
    x = 228,195.56/541.50
  6. Step 6: Final answer
    x = 421.42

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Double scale
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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.