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Finding the Fourth Proportional to 251.13, 344.40 and 249.93

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Solution

The fourth proportional to 251.13, 344.40 and 249.93 is: 342.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.13 : 344.40 = 249.93 : x
  2. Step 2: Convert to fraction form
    251.13/344.40 = 249.93/x
  3. Step 3: Cross multiply
    251.13x = 344.40 × 249.93
  4. Step 4: Simplify right side
    251.13x = 86,075.89
  5. Step 5: Solve for x
    x = 86,075.89/251.13
  6. Step 6: Final answer
    x = 342.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.