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Finding the Fourth Proportional to 399.15, 598.72 and 110.59

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Solution

The fourth proportional to 399.15, 598.72 and 110.59 is: 165.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.15 : 598.72 = 110.59 : x
  2. Step 2: Convert to fraction form
    399.15/598.72 = 110.59/x
  3. Step 3: Cross multiply
    399.15x = 598.72 × 110.59
  4. Step 4: Simplify right side
    399.15x = 66,212.44
  5. Step 5: Solve for x
    x = 66,212.44/399.15
  6. Step 6: Final answer
    x = 165.88

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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.