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Finding the Fourth Proportional to 398.87, 595.55 and 374.27

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Solution

The fourth proportional to 398.87, 595.55 and 374.27 is: 558.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.87 : 595.55 = 374.27 : x
  2. Step 2: Convert to fraction form
    398.87/595.55 = 374.27/x
  3. Step 3: Cross multiply
    398.87x = 595.55 × 374.27
  4. Step 4: Simplify right side
    398.87x = 222,896.12
  5. Step 5: Solve for x
    x = 222,896.12/398.87
  6. Step 6: Final answer
    x = 558.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.