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Finding the Fourth Proportional to 708.93, 1,057.14 and 622.62

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Solution

The fourth proportional to 708.93, 1,057.14 and 622.62 is: 928.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.93 : 1,057.14 = 622.62 : x
  2. Step 2: Convert to fraction form
    708.93/1,057.14 = 622.62/x
  3. Step 3: Cross multiply
    708.93x = 1,057.14 × 622.62
  4. Step 4: Simplify right side
    708.93x = 658,196.51
  5. Step 5: Solve for x
    x = 658,196.51/708.93
  6. Step 6: Final answer
    x = 928.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.