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Finding the Fourth Proportional to 697.36, 962.76 and 487.66

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Solution

The fourth proportional to 697.36, 962.76 and 487.66 is: 673.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.36 : 962.76 = 487.66 : x
  2. Step 2: Convert to fraction form
    697.36/962.76 = 487.66/x
  3. Step 3: Cross multiply
    697.36x = 962.76 × 487.66
  4. Step 4: Simplify right side
    697.36x = 469,499.54
  5. Step 5: Solve for x
    x = 469,499.54/697.36
  6. Step 6: Final answer
    x = 673.25

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.