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Finding the Fourth Proportional to 733.95, 1,012.83 and 419.23

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Solution

The fourth proportional to 733.95, 1,012.83 and 419.23 is: 578.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.95 : 1,012.83 = 419.23 : x
  2. Step 2: Convert to fraction form
    733.95/1,012.83 = 419.23/x
  3. Step 3: Cross multiply
    733.95x = 1,012.83 × 419.23
  4. Step 4: Simplify right side
    733.95x = 424,608.72
  5. Step 5: Solve for x
    x = 424,608.72/733.95
  6. Step 6: Final answer
    x = 578.53

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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.