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Finding the Fourth Proportional to 900.36, 1,234.39 and 883.96

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Solution

The fourth proportional to 900.36, 1,234.39 and 883.96 is: 1,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.36 : 1,234.39 = 883.96 : x
  2. Step 2: Convert to fraction form
    900.36/1,234.39 = 883.96/x
  3. Step 3: Cross multiply
    900.36x = 1,234.39 × 883.96
  4. Step 4: Simplify right side
    900.36x = 1,091,151.38
  5. Step 5: Solve for x
    x = 1,091,151.38/900.36
  6. Step 6: Final answer
    x = 1,211.91

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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.