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Finding the Fourth Proportional to 463.36, 639.20 and 325.12

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Solution

The fourth proportional to 463.36, 639.20 and 325.12 is: 448.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.36 : 639.20 = 325.12 : x
  2. Step 2: Convert to fraction form
    463.36/639.20 = 325.12/x
  3. Step 3: Cross multiply
    463.36x = 639.20 × 325.12
  4. Step 4: Simplify right side
    463.36x = 207,816.70
  5. Step 5: Solve for x
    x = 207,816.70/463.36
  6. Step 6: Final answer
    x = 448.50

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