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Finding the Fourth Proportional to 494.46, 685.24 and 487.50

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Solution

The fourth proportional to 494.46, 685.24 and 487.50 is: 675.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.46 : 685.24 = 487.50 : x
  2. Step 2: Convert to fraction form
    494.46/685.24 = 487.50/x
  3. Step 3: Cross multiply
    494.46x = 685.24 × 487.50
  4. Step 4: Simplify right side
    494.46x = 334,054.50
  5. Step 5: Solve for x
    x = 334,054.50/494.46
  6. Step 6: Final answer
    x = 675.59

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.