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Finding the Fourth Proportional to 398.46, 597.18 and 236.22

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Solution

The fourth proportional to 398.46, 597.18 and 236.22 is: 354.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.46 : 597.18 = 236.22 : x
  2. Step 2: Convert to fraction form
    398.46/597.18 = 236.22/x
  3. Step 3: Cross multiply
    398.46x = 597.18 × 236.22
  4. Step 4: Simplify right side
    398.46x = 141,065.86
  5. Step 5: Solve for x
    x = 141,065.86/398.46
  6. Step 6: Final answer
    x = 354.03

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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.