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Finding the Fourth Proportional to 1,259.25, 1,737.68 and 762.17

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Solution

The fourth proportional to 1,259.25, 1,737.68 and 762.17 is: 1,051.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.25 : 1,737.68 = 762.17 : x
  2. Step 2: Convert to fraction form
    1,259.25/1,737.68 = 762.17/x
  3. Step 3: Cross multiply
    1,259.25x = 1,737.68 × 762.17
  4. Step 4: Simplify right side
    1,259.25x = 1,324,398.88
  5. Step 5: Solve for x
    x = 1,324,398.88/1,259.25
  6. Step 6: Final answer
    x = 1,051.74

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Why These Related Problems?

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