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Finding the Fourth Proportional to 645.49, 968.23 and 158.54

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Solution

The fourth proportional to 645.49, 968.23 and 158.54 is: 237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.49 : 968.23 = 158.54 : x
  2. Step 2: Convert to fraction form
    645.49/968.23 = 158.54/x
  3. Step 3: Cross multiply
    645.49x = 968.23 × 158.54
  4. Step 4: Simplify right side
    645.49x = 153,497.95
  5. Step 5: Solve for x
    x = 153,497.95/645.49
  6. Step 6: Final answer
    x = 237.80

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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.