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Finding the Fourth Proportional to 736.58, 1,107.30 and 412.58

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Solution

The fourth proportional to 736.58, 1,107.30 and 412.58 is: 620.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.58 : 1,107.30 = 412.58 : x
  2. Step 2: Convert to fraction form
    736.58/1,107.30 = 412.58/x
  3. Step 3: Cross multiply
    736.58x = 1,107.30 × 412.58
  4. Step 4: Simplify right side
    736.58x = 456,849.83
  5. Step 5: Solve for x
    x = 456,849.83/736.58
  6. Step 6: Final answer
    x = 620.23

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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.