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Finding the Fourth Proportional to 300.75, 448.71 and 262.17

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Solution

The fourth proportional to 300.75, 448.71 and 262.17 is: 391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.75 : 448.71 = 262.17 : x
  2. Step 2: Convert to fraction form
    300.75/448.71 = 262.17/x
  3. Step 3: Cross multiply
    300.75x = 448.71 × 262.17
  4. Step 4: Simplify right side
    300.75x = 117,637.32
  5. Step 5: Solve for x
    x = 117,637.32/300.75
  6. Step 6: Final answer
    x = 391.15

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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.