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Finding the Fourth Proportional to 546.28, 753.90 and 313.42

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Solution

The fourth proportional to 546.28, 753.90 and 313.42 is: 432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.28 : 753.90 = 313.42 : x
  2. Step 2: Convert to fraction form
    546.28/753.90 = 313.42/x
  3. Step 3: Cross multiply
    546.28x = 753.90 × 313.42
  4. Step 4: Simplify right side
    546.28x = 236,287.34
  5. Step 5: Solve for x
    x = 236,287.34/546.28
  6. Step 6: Final answer
    x = 432.54

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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.