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Finding the Fourth Proportional to 546.49, 753.59 and 428.25

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Solution

The fourth proportional to 546.49, 753.59 and 428.25 is: 590.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.49 : 753.59 = 428.25 : x
  2. Step 2: Convert to fraction form
    546.49/753.59 = 428.25/x
  3. Step 3: Cross multiply
    546.49x = 753.59 × 428.25
  4. Step 4: Simplify right side
    546.49x = 322,725.99
  5. Step 5: Solve for x
    x = 322,725.99/546.49
  6. Step 6: Final answer
    x = 590.55

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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.