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Finding the Fourth Proportional to 736.84, 1,105.42 and 371.48

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Solution

The fourth proportional to 736.84, 1,105.42 and 371.48 is: 557.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.84 : 1,105.42 = 371.48 : x
  2. Step 2: Convert to fraction form
    736.84/1,105.42 = 371.48/x
  3. Step 3: Cross multiply
    736.84x = 1,105.42 × 371.48
  4. Step 4: Simplify right side
    736.84x = 410,641.42
  5. Step 5: Solve for x
    x = 410,641.42/736.84
  6. Step 6: Final answer
    x = 557.30

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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.