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Finding the Fourth Proportional to 1,718.13, 2,577.01 and 677.98

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Solution

The fourth proportional to 1,718.13, 2,577.01 and 677.98 is: 1,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.13 : 2,577.01 = 677.98 : x
  2. Step 2: Convert to fraction form
    1,718.13/2,577.01 = 677.98/x
  3. Step 3: Cross multiply
    1,718.13x = 2,577.01 × 677.98
  4. Step 4: Simplify right side
    1,718.13x = 1,747,161.24
  5. Step 5: Solve for x
    x = 1,747,161.24/1,718.13
  6. Step 6: Final answer
    x = 1,016.90

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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.