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Finding the Fourth Proportional to 253.38, 349.66 and 179.72

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Solution

The fourth proportional to 253.38, 349.66 and 179.72 is: 248.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.38 : 349.66 = 179.72 : x
  2. Step 2: Convert to fraction form
    253.38/349.66 = 179.72/x
  3. Step 3: Cross multiply
    253.38x = 349.66 × 179.72
  4. Step 4: Simplify right side
    253.38x = 62,840.90
  5. Step 5: Solve for x
    x = 62,840.90/253.38
  6. Step 6: Final answer
    x = 248.01

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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.