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Finding the Fourth Proportional to 481.60, 722.67 and 286.66

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Solution

The fourth proportional to 481.60, 722.67 and 286.66 is: 430.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.60 : 722.67 = 286.66 : x
  2. Step 2: Convert to fraction form
    481.60/722.67 = 286.66/x
  3. Step 3: Cross multiply
    481.60x = 722.67 × 286.66
  4. Step 4: Simplify right side
    481.60x = 207,160.58
  5. Step 5: Solve for x
    x = 207,160.58/481.60
  6. Step 6: Final answer
    x = 430.15

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Why These Related Problems?

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