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Finding the Fourth Proportional to 1,255.08, 1,732.01 and 695.55

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Solution

The fourth proportional to 1,255.08, 1,732.01 and 695.55 is: 959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.08 : 1,732.01 = 695.55 : x
  2. Step 2: Convert to fraction form
    1,255.08/1,732.01 = 695.55/x
  3. Step 3: Cross multiply
    1,255.08x = 1,732.01 × 695.55
  4. Step 4: Simplify right side
    1,255.08x = 1,204,699.56
  5. Step 5: Solve for x
    x = 1,204,699.56/1,255.08
  6. Step 6: Final answer
    x = 959.86

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1.5x scale

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.