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Finding the Fourth Proportional to 607.91, 911.09 and 330.25

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Solution

The fourth proportional to 607.91, 911.09 and 330.25 is: 494.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.91 : 911.09 = 330.25 : x
  2. Step 2: Convert to fraction form
    607.91/911.09 = 330.25/x
  3. Step 3: Cross multiply
    607.91x = 911.09 × 330.25
  4. Step 4: Simplify right side
    607.91x = 300,887.47
  5. Step 5: Solve for x
    x = 300,887.47/607.91
  6. Step 6: Final answer
    x = 494.95

Related Problems

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.