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Finding the Fourth Proportional to 701.69, 1,050.56 and 392.99

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Solution

The fourth proportional to 701.69, 1,050.56 and 392.99 is: 588.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.69 : 1,050.56 = 392.99 : x
  2. Step 2: Convert to fraction form
    701.69/1,050.56 = 392.99/x
  3. Step 3: Cross multiply
    701.69x = 1,050.56 × 392.99
  4. Step 4: Simplify right side
    701.69x = 412,857.61
  5. Step 5: Solve for x
    x = 412,857.61/701.69
  6. Step 6: Final answer
    x = 588.38

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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.