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Finding the Fourth Proportional to 697.68, 960.60 and 632.88

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Solution

The fourth proportional to 697.68, 960.60 and 632.88 is: 871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.68 : 960.60 = 632.88 : x
  2. Step 2: Convert to fraction form
    697.68/960.60 = 632.88/x
  3. Step 3: Cross multiply
    697.68x = 960.60 × 632.88
  4. Step 4: Simplify right side
    697.68x = 607,944.53
  5. Step 5: Solve for x
    x = 607,944.53/697.68
  6. Step 6: Final answer
    x = 871.38

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Double scale
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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.