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Finding the Fourth Proportional to 917.33, 1,266.03 and 563.27

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Solution

The fourth proportional to 917.33, 1,266.03 and 563.27 is: 777.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.33 : 1,266.03 = 563.27 : x
  2. Step 2: Convert to fraction form
    917.33/1,266.03 = 563.27/x
  3. Step 3: Cross multiply
    917.33x = 1,266.03 × 563.27
  4. Step 4: Simplify right side
    917.33x = 713,110.39
  5. Step 5: Solve for x
    x = 713,110.39/917.33
  6. Step 6: Final answer
    x = 777.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.