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Finding the Fourth Proportional to 325.84, 485.75 and 299.92

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Solution

The fourth proportional to 325.84, 485.75 and 299.92 is: 447.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.84 : 485.75 = 299.92 : x
  2. Step 2: Convert to fraction form
    325.84/485.75 = 299.92/x
  3. Step 3: Cross multiply
    325.84x = 485.75 × 299.92
  4. Step 4: Simplify right side
    325.84x = 145,686.14
  5. Step 5: Solve for x
    x = 145,686.14/325.84
  6. Step 6: Final answer
    x = 447.11

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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.