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Finding the Fourth Proportional to 398.91, 598.29 and 110.34

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Solution

The fourth proportional to 398.91, 598.29 and 110.34 is: 165.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.91 : 598.29 = 110.34 : x
  2. Step 2: Convert to fraction form
    398.91/598.29 = 110.34/x
  3. Step 3: Cross multiply
    398.91x = 598.29 × 110.34
  4. Step 4: Simplify right side
    398.91x = 66,015.32
  5. Step 5: Solve for x
    x = 66,015.32/398.91
  6. Step 6: Final answer
    x = 165.49

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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.