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Finding the Fourth Proportional to 427.36, 593.80 and 422.84

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Solution

The fourth proportional to 427.36, 593.80 and 422.84 is: 587.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.36 : 593.80 = 422.84 : x
  2. Step 2: Convert to fraction form
    427.36/593.80 = 422.84/x
  3. Step 3: Cross multiply
    427.36x = 593.80 × 422.84
  4. Step 4: Simplify right side
    427.36x = 251,082.39
  5. Step 5: Solve for x
    x = 251,082.39/427.36
  6. Step 6: Final answer
    x = 587.52

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.