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Finding the Fourth Proportional to 546.28, 753.89 and 310.30

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Solution

The fourth proportional to 546.28, 753.89 and 310.30 is: 428.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.28 : 753.89 = 310.30 : x
  2. Step 2: Convert to fraction form
    546.28/753.89 = 310.30/x
  3. Step 3: Cross multiply
    546.28x = 753.89 × 310.30
  4. Step 4: Simplify right side
    546.28x = 233,928.63
  5. Step 5: Solve for x
    x = 233,928.63/546.28
  6. Step 6: Final answer
    x = 428.22

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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.