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Finding the Fourth Proportional to 263.10, 363.09 and 145.09

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Solution

The fourth proportional to 263.10, 363.09 and 145.09 is: 200.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.10 : 363.09 = 145.09 : x
  2. Step 2: Convert to fraction form
    263.10/363.09 = 145.09/x
  3. Step 3: Cross multiply
    263.10x = 363.09 × 145.09
  4. Step 4: Simplify right side
    263.10x = 52,678.19
  5. Step 5: Solve for x
    x = 52,678.19/263.10
  6. Step 6: Final answer
    x = 200.22

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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.