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Finding the Fourth Proportional to 1,099.13, 1,647.80 and 482.37

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Solution

The fourth proportional to 1,099.13, 1,647.80 and 482.37 is: 723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.13 : 1,647.80 = 482.37 : x
  2. Step 2: Convert to fraction form
    1,099.13/1,647.80 = 482.37/x
  3. Step 3: Cross multiply
    1,099.13x = 1,647.80 × 482.37
  4. Step 4: Simplify right side
    1,099.13x = 794,841.05
  5. Step 5: Solve for x
    x = 794,841.05/1,099.13
  6. Step 6: Final answer
    x = 723.15

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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.