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Finding the Fourth Proportional to 263.80, 364.08 and 147.40

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Solution

The fourth proportional to 263.80, 364.08 and 147.40 is: 203.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.80 : 364.08 = 147.40 : x
  2. Step 2: Convert to fraction form
    263.80/364.08 = 147.40/x
  3. Step 3: Cross multiply
    263.80x = 364.08 × 147.40
  4. Step 4: Simplify right side
    263.80x = 53,665.39
  5. Step 5: Solve for x
    x = 53,665.39/263.80
  6. Step 6: Final answer
    x = 203.43

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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.