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Finding the Fourth Proportional to 893.54, 1,233.11 and 500.55

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Solution

The fourth proportional to 893.54, 1,233.11 and 500.55 is: 690.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.54 : 1,233.11 = 500.55 : x
  2. Step 2: Convert to fraction form
    893.54/1,233.11 = 500.55/x
  3. Step 3: Cross multiply
    893.54x = 1,233.11 × 500.55
  4. Step 4: Simplify right side
    893.54x = 617,233.21
  5. Step 5: Solve for x
    x = 617,233.21/893.54
  6. Step 6: Final answer
    x = 690.77

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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.