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Finding the Fourth Proportional to 253.40, 349.53 and 179.58

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Solution

The fourth proportional to 253.40, 349.53 and 179.58 is: 247.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.40 : 349.53 = 179.58 : x
  2. Step 2: Convert to fraction form
    253.40/349.53 = 179.58/x
  3. Step 3: Cross multiply
    253.40x = 349.53 × 179.58
  4. Step 4: Simplify right side
    253.40x = 62,770.24
  5. Step 5: Solve for x
    x = 62,770.24/253.40
  6. Step 6: Final answer
    x = 247.72

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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.