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Finding the Fourth Proportional to 696.76, 961.44 and 416.93

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Solution

The fourth proportional to 696.76, 961.44 and 416.93 is: 575.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.76 : 961.44 = 416.93 : x
  2. Step 2: Convert to fraction form
    696.76/961.44 = 416.93/x
  3. Step 3: Cross multiply
    696.76x = 961.44 × 416.93
  4. Step 4: Simplify right side
    696.76x = 400,854.80
  5. Step 5: Solve for x
    x = 400,854.80/696.76
  6. Step 6: Final answer
    x = 575.31

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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.