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Finding the Fourth Proportional to 223.83, 308.85 and 145.25

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Solution

The fourth proportional to 223.83, 308.85 and 145.25 is: 200.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.83 : 308.85 = 145.25 : x
  2. Step 2: Convert to fraction form
    223.83/308.85 = 145.25/x
  3. Step 3: Cross multiply
    223.83x = 308.85 × 145.25
  4. Step 4: Simplify right side
    223.83x = 44,860.87
  5. Step 5: Solve for x
    x = 44,860.87/223.83
  6. Step 6: Final answer
    x = 200.42

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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.