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Finding the Fourth Proportional to 1,069.13, 1,474.50 and 695.82

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Solution

The fourth proportional to 1,069.13, 1,474.50 and 695.82 is: 959.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069.13 : 1,474.50 = 695.82 : x
  2. Step 2: Convert to fraction form
    1,069.13/1,474.50 = 695.82/x
  3. Step 3: Cross multiply
    1,069.13x = 1,474.50 × 695.82
  4. Step 4: Simplify right side
    1,069.13x = 1,025,994.73
  5. Step 5: Solve for x
    x = 1,025,994.73/1,069.13
  6. Step 6: Final answer
    x = 959.65

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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.