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Finding the Fourth Proportional to 541.61, 747.38 and 305.48

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Solution

The fourth proportional to 541.61, 747.38 and 305.48 is: 421.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.61 : 747.38 = 305.48 : x
  2. Step 2: Convert to fraction form
    541.61/747.38 = 305.48/x
  3. Step 3: Cross multiply
    541.61x = 747.38 × 305.48
  4. Step 4: Simplify right side
    541.61x = 228,304.38
  5. Step 5: Solve for x
    x = 228,304.38/541.61
  6. Step 6: Final answer
    x = 421.53

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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.