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Finding the Fourth Proportional to 559.42, 838.32 and 397.42

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Solution

The fourth proportional to 559.42, 838.32 and 397.42 is: 595.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.42 : 838.32 = 397.42 : x
  2. Step 2: Convert to fraction form
    559.42/838.32 = 397.42/x
  3. Step 3: Cross multiply
    559.42x = 838.32 × 397.42
  4. Step 4: Simplify right side
    559.42x = 333,165.13
  5. Step 5: Solve for x
    x = 333,165.13/559.42
  6. Step 6: Final answer
    x = 595.55

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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.