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Finding the Fourth Proportional to 483.49, 665.75 and 326.06

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Solution

The fourth proportional to 483.49, 665.75 and 326.06 is: 448.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.49 : 665.75 = 326.06 : x
  2. Step 2: Convert to fraction form
    483.49/665.75 = 326.06/x
  3. Step 3: Cross multiply
    483.49x = 665.75 × 326.06
  4. Step 4: Simplify right side
    483.49x = 217,074.43
  5. Step 5: Solve for x
    x = 217,074.43/483.49
  6. Step 6: Final answer
    x = 448.98

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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.