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Finding the Fourth Proportional to 701.55, 1,050.30 and 681.30

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Solution

The fourth proportional to 701.55, 1,050.30 and 681.30 is: 1,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.55 : 1,050.30 = 681.30 : x
  2. Step 2: Convert to fraction form
    701.55/1,050.30 = 681.30/x
  3. Step 3: Cross multiply
    701.55x = 1,050.30 × 681.30
  4. Step 4: Simplify right side
    701.55x = 715,569.39
  5. Step 5: Solve for x
    x = 715,569.39/701.55
  6. Step 6: Final answer
    x = 1,019.98

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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.