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Finding the Fourth Proportional to 243.01, 363.90 and 237.20

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Solution

The fourth proportional to 243.01, 363.90 and 237.20 is: 355.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.01 : 363.90 = 237.20 : x
  2. Step 2: Convert to fraction form
    243.01/363.90 = 237.20/x
  3. Step 3: Cross multiply
    243.01x = 363.90 × 237.20
  4. Step 4: Simplify right side
    243.01x = 86,317.08
  5. Step 5: Solve for x
    x = 86,317.08/243.01
  6. Step 6: Final answer
    x = 355.21

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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.