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Finding the Fourth Proportional to 300.84, 449.69 and 260.17

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Solution

The fourth proportional to 300.84, 449.69 and 260.17 is: 388.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.84 : 449.69 = 260.17 : x
  2. Step 2: Convert to fraction form
    300.84/449.69 = 260.17/x
  3. Step 3: Cross multiply
    300.84x = 449.69 × 260.17
  4. Step 4: Simplify right side
    300.84x = 116,995.85
  5. Step 5: Solve for x
    x = 116,995.85/300.84
  6. Step 6: Final answer
    x = 388.90

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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.