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Finding the Fourth Proportional to 398.58, 600.90 and 370.74

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Solution

The fourth proportional to 398.58, 600.90 and 370.74 is: 558.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.58 : 600.90 = 370.74 : x
  2. Step 2: Convert to fraction form
    398.58/600.90 = 370.74/x
  3. Step 3: Cross multiply
    398.58x = 600.90 × 370.74
  4. Step 4: Simplify right side
    398.58x = 222,777.67
  5. Step 5: Solve for x
    x = 222,777.67/398.58
  6. Step 6: Final answer
    x = 558.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.