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Finding the Fourth Proportional to 243.88, 365.35 and 189.51

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Solution

The fourth proportional to 243.88, 365.35 and 189.51 is: 283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.88 : 365.35 = 189.51 : x
  2. Step 2: Convert to fraction form
    243.88/365.35 = 189.51/x
  3. Step 3: Cross multiply
    243.88x = 365.35 × 189.51
  4. Step 4: Simplify right side
    243.88x = 69,237.48
  5. Step 5: Solve for x
    x = 69,237.48/243.88
  6. Step 6: Final answer
    x = 283.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.