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Finding the Fourth Proportional to 1,099.17, 1,647.34 and 482.36

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Solution

The fourth proportional to 1,099.17, 1,647.34 and 482.36 is: 722.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.17 : 1,647.34 = 482.36 : x
  2. Step 2: Convert to fraction form
    1,099.17/1,647.34 = 482.36/x
  3. Step 3: Cross multiply
    1,099.17x = 1,647.34 × 482.36
  4. Step 4: Simplify right side
    1,099.17x = 794,601.48
  5. Step 5: Solve for x
    x = 794,601.48/1,099.17
  6. Step 6: Final answer
    x = 722.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.