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Finding the Fourth Proportional to 251.93, 349.44 and 242.71

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Solution

The fourth proportional to 251.93, 349.44 and 242.71 is: 336.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.93 : 349.44 = 242.71 : x
  2. Step 2: Convert to fraction form
    251.93/349.44 = 242.71/x
  3. Step 3: Cross multiply
    251.93x = 349.44 × 242.71
  4. Step 4: Simplify right side
    251.93x = 84,810.80
  5. Step 5: Solve for x
    x = 84,810.80/251.93
  6. Step 6: Final answer
    x = 336.64

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.