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Finding the Fourth Proportional to 253.89, 349.42 and 180.07

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Solution

The fourth proportional to 253.89, 349.42 and 180.07 is: 247.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.89 : 349.42 = 180.07 : x
  2. Step 2: Convert to fraction form
    253.89/349.42 = 180.07/x
  3. Step 3: Cross multiply
    253.89x = 349.42 × 180.07
  4. Step 4: Simplify right side
    253.89x = 62,920.06
  5. Step 5: Solve for x
    x = 62,920.06/253.89
  6. Step 6: Final answer
    x = 247.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.