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Finding the Fourth Proportional to 737.45, 1,105.85 and 275.05

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Solution

The fourth proportional to 737.45, 1,105.85 and 275.05 is: 412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.45 : 1,105.85 = 275.05 : x
  2. Step 2: Convert to fraction form
    737.45/1,105.85 = 275.05/x
  3. Step 3: Cross multiply
    737.45x = 1,105.85 × 275.05
  4. Step 4: Simplify right side
    737.45x = 304,159.89
  5. Step 5: Solve for x
    x = 304,159.89/737.45
  6. Step 6: Final answer
    x = 412.45

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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.