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Finding the Fourth Proportional to 1,686.02, 2,527.77 and 863.90

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Solution

The fourth proportional to 1,686.02, 2,527.77 and 863.90 is: 1,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.02 : 2,527.77 = 863.90 : x
  2. Step 2: Convert to fraction form
    1,686.02/2,527.77 = 863.90/x
  3. Step 3: Cross multiply
    1,686.02x = 2,527.77 × 863.90
  4. Step 4: Simplify right side
    1,686.02x = 2,183,740.50
  5. Step 5: Solve for x
    x = 2,183,740.50/1,686.02
  6. Step 6: Final answer
    x = 1,295.20

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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.