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Finding the Fourth Proportional to 695.59, 966.36 and 689.25

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Solution

The fourth proportional to 695.59, 966.36 and 689.25 is: 957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.59 : 966.36 = 689.25 : x
  2. Step 2: Convert to fraction form
    695.59/966.36 = 689.25/x
  3. Step 3: Cross multiply
    695.59x = 966.36 × 689.25
  4. Step 4: Simplify right side
    695.59x = 666,055.35
  5. Step 5: Solve for x
    x = 666,055.35/695.59
  6. Step 6: Final answer
    x = 957.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.