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Finding the Fourth Proportional to 555.68, 766.44 and 481.88

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Solution

The fourth proportional to 555.68, 766.44 and 481.88 is: 664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.68 : 766.44 = 481.88 : x
  2. Step 2: Convert to fraction form
    555.68/766.44 = 481.88/x
  3. Step 3: Cross multiply
    555.68x = 766.44 × 481.88
  4. Step 4: Simplify right side
    555.68x = 369,332.11
  5. Step 5: Solve for x
    x = 369,332.11/555.68
  6. Step 6: Final answer
    x = 664.65

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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.