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Finding the Fourth Proportional to 398.42, 596.98 and 383.23

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Solution

The fourth proportional to 398.42, 596.98 and 383.23 is: 574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.42 : 596.98 = 383.23 : x
  2. Step 2: Convert to fraction form
    398.42/596.98 = 383.23/x
  3. Step 3: Cross multiply
    398.42x = 596.98 × 383.23
  4. Step 4: Simplify right side
    398.42x = 228,780.65
  5. Step 5: Solve for x
    x = 228,780.65/398.42
  6. Step 6: Final answer
    x = 574.22

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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.