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Finding the Fourth Proportional to 326.01, 448.50 and 316.90

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Solution

The fourth proportional to 326.01, 448.50 and 316.90 is: 435.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.01 : 448.50 = 316.90 : x
  2. Step 2: Convert to fraction form
    326.01/448.50 = 316.90/x
  3. Step 3: Cross multiply
    326.01x = 448.50 × 316.90
  4. Step 4: Simplify right side
    326.01x = 142,129.65
  5. Step 5: Solve for x
    x = 142,129.65/326.01
  6. Step 6: Final answer
    x = 435.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.