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Finding the Fourth Proportional to 1,266.12, 1,746.86 and 824.66

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Solution

The fourth proportional to 1,266.12, 1,746.86 and 824.66 is: 1,137.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.12 : 1,746.86 = 824.66 : x
  2. Step 2: Convert to fraction form
    1,266.12/1,746.86 = 824.66/x
  3. Step 3: Cross multiply
    1,266.12x = 1,746.86 × 824.66
  4. Step 4: Simplify right side
    1,266.12x = 1,440,565.57
  5. Step 5: Solve for x
    x = 1,440,565.57/1,266.12
  6. Step 6: Final answer
    x = 1,137.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.