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Finding the Fourth Proportional to 741.14, 1,110.95 and 330.47

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Solution

The fourth proportional to 741.14, 1,110.95 and 330.47 is: 495.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.14 : 1,110.95 = 330.47 : x
  2. Step 2: Convert to fraction form
    741.14/1,110.95 = 330.47/x
  3. Step 3: Cross multiply
    741.14x = 1,110.95 × 330.47
  4. Step 4: Simplify right side
    741.14x = 367,136.77
  5. Step 5: Solve for x
    x = 367,136.77/741.14
  6. Step 6: Final answer
    x = 495.37

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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.