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Finding the Fourth Proportional to 814.86, 1,122.66 and 741.96

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Solution

The fourth proportional to 814.86, 1,122.66 and 741.96 is: 1,022.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.86 : 1,122.66 = 741.96 : x
  2. Step 2: Convert to fraction form
    814.86/1,122.66 = 741.96/x
  3. Step 3: Cross multiply
    814.86x = 1,122.66 × 741.96
  4. Step 4: Simplify right side
    814.86x = 832,968.81
  5. Step 5: Solve for x
    x = 832,968.81/814.86
  6. Step 6: Final answer
    x = 1,022.22

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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.