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Finding the Fourth Proportional to 541.52, 747.36 and 308.64

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Solution

The fourth proportional to 541.52, 747.36 and 308.64 is: 425.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.52 : 747.36 = 308.64 : x
  2. Step 2: Convert to fraction form
    541.52/747.36 = 308.64/x
  3. Step 3: Cross multiply
    541.52x = 747.36 × 308.64
  4. Step 4: Simplify right side
    541.52x = 230,665.19
  5. Step 5: Solve for x
    x = 230,665.19/541.52
  6. Step 6: Final answer
    x = 425.96

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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.