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Finding the Fourth Proportional to 546.25, 753.27 and 486.25

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Solution

The fourth proportional to 546.25, 753.27 and 486.25 is: 670.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.25 : 753.27 = 486.25 : x
  2. Step 2: Convert to fraction form
    546.25/753.27 = 486.25/x
  3. Step 3: Cross multiply
    546.25x = 753.27 × 486.25
  4. Step 4: Simplify right side
    546.25x = 366,277.54
  5. Step 5: Solve for x
    x = 366,277.54/546.25
  6. Step 6: Final answer
    x = 670.53

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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.