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Finding the Fourth Proportional to 911.40, 1,249.51 and 894.99

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Solution

The fourth proportional to 911.40, 1,249.51 and 894.99 is: 1,227.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.40 : 1,249.51 = 894.99 : x
  2. Step 2: Convert to fraction form
    911.40/1,249.51 = 894.99/x
  3. Step 3: Cross multiply
    911.40x = 1,249.51 × 894.99
  4. Step 4: Simplify right side
    911.40x = 1,118,298.95
  5. Step 5: Solve for x
    x = 1,118,298.95/911.40
  6. Step 6: Final answer
    x = 1,227.01

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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.