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Finding the Fourth Proportional to 655.27, 904.09 and 422.53

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Solution

The fourth proportional to 655.27, 904.09 and 422.53 is: 582.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.27 : 904.09 = 422.53 : x
  2. Step 2: Convert to fraction form
    655.27/904.09 = 422.53/x
  3. Step 3: Cross multiply
    655.27x = 904.09 × 422.53
  4. Step 4: Simplify right side
    655.27x = 382,005.15
  5. Step 5: Solve for x
    x = 382,005.15/655.27
  6. Step 6: Final answer
    x = 582.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.