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Finding the Fourth Proportional to 243.63, 363.44 and 235.40

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Solution

The fourth proportional to 243.63, 363.44 and 235.40 is: 351.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.63 : 363.44 = 235.40 : x
  2. Step 2: Convert to fraction form
    243.63/363.44 = 235.40/x
  3. Step 3: Cross multiply
    243.63x = 363.44 × 235.40
  4. Step 4: Simplify right side
    243.63x = 85,552.55
  5. Step 5: Solve for x
    x = 85,552.55/243.63
  6. Step 6: Final answer
    x = 351.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.