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Finding the Fourth Proportional to 737.03, 1,017.09 and 405.45

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Solution

The fourth proportional to 737.03, 1,017.09 and 405.45 is: 559.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.03 : 1,017.09 = 405.45 : x
  2. Step 2: Convert to fraction form
    737.03/1,017.09 = 405.45/x
  3. Step 3: Cross multiply
    737.03x = 1,017.09 × 405.45
  4. Step 4: Simplify right side
    737.03x = 412,379.14
  5. Step 5: Solve for x
    x = 412,379.14/737.03
  6. Step 6: Final answer
    x = 559.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.