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Finding the Fourth Proportional to 900.10, 1,234.81 and 844.22

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Solution

The fourth proportional to 900.10, 1,234.81 and 844.22 is: 1,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.10 : 1,234.81 = 844.22 : x
  2. Step 2: Convert to fraction form
    900.10/1,234.81 = 844.22/x
  3. Step 3: Cross multiply
    900.10x = 1,234.81 × 844.22
  4. Step 4: Simplify right side
    900.10x = 1,042,447.08
  5. Step 5: Solve for x
    x = 1,042,447.08/900.10
  6. Step 6: Final answer
    x = 1,158.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.