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Finding the Fourth Proportional to 300.23, 452.40 and 247.31

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Solution

The fourth proportional to 300.23, 452.40 and 247.31 is: 372.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.23 : 452.40 = 247.31 : x
  2. Step 2: Convert to fraction form
    300.23/452.40 = 247.31/x
  3. Step 3: Cross multiply
    300.23x = 452.40 × 247.31
  4. Step 4: Simplify right side
    300.23x = 111,883.04
  5. Step 5: Solve for x
    x = 111,883.04/300.23
  6. Step 6: Final answer
    x = 372.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.