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Finding the Fourth Proportional to 701.93, 1,050.81 and 427.19

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Solution

The fourth proportional to 701.93, 1,050.81 and 427.19 is: 639.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.93 : 1,050.81 = 427.19 : x
  2. Step 2: Convert to fraction form
    701.93/1,050.81 = 427.19/x
  3. Step 3: Cross multiply
    701.93x = 1,050.81 × 427.19
  4. Step 4: Simplify right side
    701.93x = 448,890.27
  5. Step 5: Solve for x
    x = 448,890.27/701.93
  6. Step 6: Final answer
    x = 639.51

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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.