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Finding the Fourth Proportional to 1,102.78, 1,521.85 and 605.44

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Solution

The fourth proportional to 1,102.78, 1,521.85 and 605.44 is: 835.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.78 : 1,521.85 = 605.44 : x
  2. Step 2: Convert to fraction form
    1,102.78/1,521.85 = 605.44/x
  3. Step 3: Cross multiply
    1,102.78x = 1,521.85 × 605.44
  4. Step 4: Simplify right side
    1,102.78x = 921,381.83
  5. Step 5: Solve for x
    x = 921,381.83/1,102.78
  6. Step 6: Final answer
    x = 835.51

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