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Finding the Fourth Proportional to 245.54, 338.81 and 147.29

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Solution

The fourth proportional to 245.54, 338.81 and 147.29 is: 203.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.54 : 338.81 = 147.29 : x
  2. Step 2: Convert to fraction form
    245.54/338.81 = 147.29/x
  3. Step 3: Cross multiply
    245.54x = 338.81 × 147.29
  4. Step 4: Simplify right side
    245.54x = 49,900.89
  5. Step 5: Solve for x
    x = 49,900.89/245.54
  6. Step 6: Final answer
    x = 203.23

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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.