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Finding the Fourth Proportional to 546.45, 754.08 and 313.57

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Solution

The fourth proportional to 546.45, 754.08 and 313.57 is: 432.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.45 : 754.08 = 313.57 : x
  2. Step 2: Convert to fraction form
    546.45/754.08 = 313.57/x
  3. Step 3: Cross multiply
    546.45x = 754.08 × 313.57
  4. Step 4: Simplify right side
    546.45x = 236,456.87
  5. Step 5: Solve for x
    x = 236,456.87/546.45
  6. Step 6: Final answer
    x = 432.71

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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.