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Finding the Fourth Proportional to 696.25, 960.80 and 416.32

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Solution

The fourth proportional to 696.25, 960.80 and 416.32 is: 574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.25 : 960.80 = 416.32 : x
  2. Step 2: Convert to fraction form
    696.25/960.80 = 416.32/x
  3. Step 3: Cross multiply
    696.25x = 960.80 × 416.32
  4. Step 4: Simplify right side
    696.25x = 400,001.20
  5. Step 5: Solve for x
    x = 400,001.20/696.25
  6. Step 6: Final answer
    x = 574.51

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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.