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Finding the Fourth Proportional to 253.79, 350.40 and 179.22

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Solution

The fourth proportional to 253.79, 350.40 and 179.22 is: 247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.79 : 350.40 = 179.22 : x
  2. Step 2: Convert to fraction form
    253.79/350.40 = 179.22/x
  3. Step 3: Cross multiply
    253.79x = 350.40 × 179.22
  4. Step 4: Simplify right side
    253.79x = 62,798.69
  5. Step 5: Solve for x
    x = 62,798.69/253.79
  6. Step 6: Final answer
    x = 247.45

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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.