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Finding the Fourth Proportional to 697.28, 966.84 and 674.15

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Solution

The fourth proportional to 697.28, 966.84 and 674.15 is: 934.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.28 : 966.84 = 674.15 : x
  2. Step 2: Convert to fraction form
    697.28/966.84 = 674.15/x
  3. Step 3: Cross multiply
    697.28x = 966.84 × 674.15
  4. Step 4: Simplify right side
    697.28x = 651,795.19
  5. Step 5: Solve for x
    x = 651,795.19/697.28
  6. Step 6: Final answer
    x = 934.77

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Half scale
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Double scale
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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.