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Finding the Fourth Proportional to 695.39, 959.72 and 415.62

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Solution

The fourth proportional to 695.39, 959.72 and 415.62 is: 573.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.39 : 959.72 = 415.62 : x
  2. Step 2: Convert to fraction form
    695.39/959.72 = 415.62/x
  3. Step 3: Cross multiply
    695.39x = 959.72 × 415.62
  4. Step 4: Simplify right side
    695.39x = 398,878.31
  5. Step 5: Solve for x
    x = 398,878.31/695.39
  6. Step 6: Final answer
    x = 573.61

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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.