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Finding the Fourth Proportional to 893.93, 1,233.68 and 520.94

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Solution

The fourth proportional to 893.93, 1,233.68 and 520.94 is: 718.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.93 : 1,233.68 = 520.94 : x
  2. Step 2: Convert to fraction form
    893.93/1,233.68 = 520.94/x
  3. Step 3: Cross multiply
    893.93x = 1,233.68 × 520.94
  4. Step 4: Simplify right side
    893.93x = 642,664.49
  5. Step 5: Solve for x
    x = 642,664.49/893.93
  6. Step 6: Final answer
    x = 718.92

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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.