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Finding the Fourth Proportional to 736.97, 1,017.16 and 438.28

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Solution

The fourth proportional to 736.97, 1,017.16 and 438.28 is: 604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.97 : 1,017.16 = 438.28 : x
  2. Step 2: Convert to fraction form
    736.97/1,017.16 = 438.28/x
  3. Step 3: Cross multiply
    736.97x = 1,017.16 × 438.28
  4. Step 4: Simplify right side
    736.97x = 445,801.06
  5. Step 5: Solve for x
    x = 445,801.06/736.97
  6. Step 6: Final answer
    x = 604.91

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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.