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Finding the Fourth Proportional to 846.72, 1,270.14 and 326.97

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Solution

The fourth proportional to 846.72, 1,270.14 and 326.97 is: 490.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.72 : 1,270.14 = 326.97 : x
  2. Step 2: Convert to fraction form
    846.72/1,270.14 = 326.97/x
  3. Step 3: Cross multiply
    846.72x = 1,270.14 × 326.97
  4. Step 4: Simplify right side
    846.72x = 415,297.68
  5. Step 5: Solve for x
    x = 415,297.68/846.72
  6. Step 6: Final answer
    x = 490.48

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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.