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Finding the Fourth Proportional to 1,049.83, 1,448.64 and 607.87

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Solution

The fourth proportional to 1,049.83, 1,448.64 and 607.87 is: 838.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.83 : 1,448.64 = 607.87 : x
  2. Step 2: Convert to fraction form
    1,049.83/1,448.64 = 607.87/x
  3. Step 3: Cross multiply
    1,049.83x = 1,448.64 × 607.87
  4. Step 4: Simplify right side
    1,049.83x = 880,584.80
  5. Step 5: Solve for x
    x = 880,584.80/1,049.83
  6. Step 6: Final answer
    x = 838.79

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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.