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Finding the Fourth Proportional to 1,002.88, 1,501.44 and 677.44

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Solution

The fourth proportional to 1,002.88, 1,501.44 and 677.44 is: 1,014.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002.88 : 1,501.44 = 677.44 : x
  2. Step 2: Convert to fraction form
    1,002.88/1,501.44 = 677.44/x
  3. Step 3: Cross multiply
    1,002.88x = 1,501.44 × 677.44
  4. Step 4: Simplify right side
    1,002.88x = 1,017,135.51
  5. Step 5: Solve for x
    x = 1,017,135.51/1,002.88
  6. Step 6: Final answer
    x = 1,014.21

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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.