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Finding the Fourth Proportional to 486.06, 728.69 and 447.62

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Solution

The fourth proportional to 486.06, 728.69 and 447.62 is: 671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.06 : 728.69 = 447.62 : x
  2. Step 2: Convert to fraction form
    486.06/728.69 = 447.62/x
  3. Step 3: Cross multiply
    486.06x = 728.69 × 447.62
  4. Step 4: Simplify right side
    486.06x = 326,170.34
  5. Step 5: Solve for x
    x = 326,170.34/486.06
  6. Step 6: Final answer
    x = 671.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.