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Finding the Fourth Proportional to 245.49, 338.76 and 140.58

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Solution

The fourth proportional to 245.49, 338.76 and 140.58 is: 193.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.49 : 338.76 = 140.58 : x
  2. Step 2: Convert to fraction form
    245.49/338.76 = 140.58/x
  3. Step 3: Cross multiply
    245.49x = 338.76 × 140.58
  4. Step 4: Simplify right side
    245.49x = 47,622.88
  5. Step 5: Solve for x
    x = 47,622.88/245.49
  6. Step 6: Final answer
    x = 193.99

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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.