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Finding the Fourth Proportional to 648.22, 893.93 and 523.81

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Solution

The fourth proportional to 648.22, 893.93 and 523.81 is: 722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.22 : 893.93 = 523.81 : x
  2. Step 2: Convert to fraction form
    648.22/893.93 = 523.81/x
  3. Step 3: Cross multiply
    648.22x = 893.93 × 523.81
  4. Step 4: Simplify right side
    648.22x = 468,249.47
  5. Step 5: Solve for x
    x = 468,249.47/648.22
  6. Step 6: Final answer
    x = 722.37

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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.