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Finding the Fourth Proportional to 709.52, 979.44 and 695.12

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Solution

The fourth proportional to 709.52, 979.44 and 695.12 is: 959.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.52 : 979.44 = 695.12 : x
  2. Step 2: Convert to fraction form
    709.52/979.44 = 695.12/x
  3. Step 3: Cross multiply
    709.52x = 979.44 × 695.12
  4. Step 4: Simplify right side
    709.52x = 680,828.33
  5. Step 5: Solve for x
    x = 680,828.33/709.52
  6. Step 6: Final answer
    x = 959.56

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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.