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Finding the Fourth Proportional to 737.53, 1,018.22 and 489.19

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Solution

The fourth proportional to 737.53, 1,018.22 and 489.19 is: 675.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.53 : 1,018.22 = 489.19 : x
  2. Step 2: Convert to fraction form
    737.53/1,018.22 = 489.19/x
  3. Step 3: Cross multiply
    737.53x = 1,018.22 × 489.19
  4. Step 4: Simplify right side
    737.53x = 498,098.05
  5. Step 5: Solve for x
    x = 498,098.05/737.53
  6. Step 6: Final answer
    x = 675.36

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1.5x scale

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.