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Finding the Fourth Proportional to 741.11, 1,111.41 and 350.87

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Solution

The fourth proportional to 741.11, 1,111.41 and 350.87 is: 526.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.11 : 1,111.41 = 350.87 : x
  2. Step 2: Convert to fraction form
    741.11/1,111.41 = 350.87/x
  3. Step 3: Cross multiply
    741.11x = 1,111.41 × 350.87
  4. Step 4: Simplify right side
    741.11x = 389,954.87
  5. Step 5: Solve for x
    x = 389,954.87/741.11
  6. Step 6: Final answer
    x = 526.18

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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.