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Finding the Fourth Proportional to 649.99, 975.08 and 217.25

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Solution

The fourth proportional to 649.99, 975.08 and 217.25 is: 325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.99 : 975.08 = 217.25 : x
  2. Step 2: Convert to fraction form
    649.99/975.08 = 217.25/x
  3. Step 3: Cross multiply
    649.99x = 975.08 × 217.25
  4. Step 4: Simplify right side
    649.99x = 211,836.13
  5. Step 5: Solve for x
    x = 211,836.13/649.99
  6. Step 6: Final answer
    x = 325.91

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Double scale
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Similar ratio
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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.