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Finding the Fourth Proportional to 694.28, 952.70 and 631.62

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Solution

The fourth proportional to 694.28, 952.70 and 631.62 is: 866.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.28 : 952.70 = 631.62 : x
  2. Step 2: Convert to fraction form
    694.28/952.70 = 631.62/x
  3. Step 3: Cross multiply
    694.28x = 952.70 × 631.62
  4. Step 4: Simplify right side
    694.28x = 601,741.22
  5. Step 5: Solve for x
    x = 601,741.22/694.28
  6. Step 6: Final answer
    x = 866.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.