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Finding the Fourth Proportional to 549.28, 748.48 and 547.36

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Solution

The fourth proportional to 549.28, 748.48 and 547.36 is: 745.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.28 : 748.48 = 547.36 : x
  2. Step 2: Convert to fraction form
    549.28/748.48 = 547.36/x
  3. Step 3: Cross multiply
    549.28x = 748.48 × 547.36
  4. Step 4: Simplify right side
    549.28x = 409,688.01
  5. Step 5: Solve for x
    x = 409,688.01/549.28
  6. Step 6: Final answer
    x = 745.86

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.