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Finding the Fourth Proportional to 399.18, 600.59 and 236.98

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Solution

The fourth proportional to 399.18, 600.59 and 236.98 is: 356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.18 : 600.59 = 236.98 : x
  2. Step 2: Convert to fraction form
    399.18/600.59 = 236.98/x
  3. Step 3: Cross multiply
    399.18x = 600.59 × 236.98
  4. Step 4: Simplify right side
    399.18x = 142,326.91
  5. Step 5: Solve for x
    x = 142,326.91/399.18
  6. Step 6: Final answer
    x = 356.55

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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.