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Finding the Fourth Proportional to 249.63, 374.31 and 153.51

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Solution

The fourth proportional to 249.63, 374.31 and 153.51 is: 230.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.63 : 374.31 = 153.51 : x
  2. Step 2: Convert to fraction form
    249.63/374.31 = 153.51/x
  3. Step 3: Cross multiply
    249.63x = 374.31 × 153.51
  4. Step 4: Simplify right side
    249.63x = 57,460.33
  5. Step 5: Solve for x
    x = 57,460.33/249.63
  6. Step 6: Final answer
    x = 230.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.