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Finding the Fourth Proportional to 677.76, 1,016.20 and 244.86

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Solution

The fourth proportional to 677.76, 1,016.20 and 244.86 is: 367.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.76 : 1,016.20 = 244.86 : x
  2. Step 2: Convert to fraction form
    677.76/1,016.20 = 244.86/x
  3. Step 3: Cross multiply
    677.76x = 1,016.20 × 244.86
  4. Step 4: Simplify right side
    677.76x = 248,826.73
  5. Step 5: Solve for x
    x = 248,826.73/677.76
  6. Step 6: Final answer
    x = 367.13

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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.