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Finding the Fourth Proportional to 746.53, 1,119.80 and 406.69

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Solution

The fourth proportional to 746.53, 1,119.80 and 406.69 is: 610.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.53 : 1,119.80 = 406.69 : x
  2. Step 2: Convert to fraction form
    746.53/1,119.80 = 406.69/x
  3. Step 3: Cross multiply
    746.53x = 1,119.80 × 406.69
  4. Step 4: Simplify right side
    746.53x = 455,409.43
  5. Step 5: Solve for x
    x = 455,409.43/746.53
  6. Step 6: Final answer
    x = 610.04

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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.