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Finding the Fourth Proportional to 741.92, 1,111.79 and 536.92

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Solution

The fourth proportional to 741.92, 1,111.79 and 536.92 is: 804.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.92 : 1,111.79 = 536.92 : x
  2. Step 2: Convert to fraction form
    741.92/1,111.79 = 536.92/x
  3. Step 3: Cross multiply
    741.92x = 1,111.79 × 536.92
  4. Step 4: Simplify right side
    741.92x = 596,940.85
  5. Step 5: Solve for x
    x = 596,940.85/741.92
  6. Step 6: Final answer
    x = 804.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.