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Finding the Fourth Proportional to 326.31, 487.69 and 300.36

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Solution

The fourth proportional to 326.31, 487.69 and 300.36 is: 448.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.31 : 487.69 = 300.36 : x
  2. Step 2: Convert to fraction form
    326.31/487.69 = 300.36/x
  3. Step 3: Cross multiply
    326.31x = 487.69 × 300.36
  4. Step 4: Simplify right side
    326.31x = 146,482.57
  5. Step 5: Solve for x
    x = 146,482.57/326.31
  6. Step 6: Final answer
    x = 448.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.