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Finding the Fourth Proportional to 764.75, 1,147.30 and 237.62

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Solution

The fourth proportional to 764.75, 1,147.30 and 237.62 is: 356.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.75 : 1,147.30 = 237.62 : x
  2. Step 2: Convert to fraction form
    764.75/1,147.30 = 237.62/x
  3. Step 3: Cross multiply
    764.75x = 1,147.30 × 237.62
  4. Step 4: Simplify right side
    764.75x = 272,625.85
  5. Step 5: Solve for x
    x = 272,625.85/764.75
  6. Step 6: Final answer
    x = 356.49

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