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Finding the Fourth Proportional to 795.63, 1,099.40 and 622.29

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Solution

The fourth proportional to 795.63, 1,099.40 and 622.29 is: 859.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.63 : 1,099.40 = 622.29 : x
  2. Step 2: Convert to fraction form
    795.63/1,099.40 = 622.29/x
  3. Step 3: Cross multiply
    795.63x = 1,099.40 × 622.29
  4. Step 4: Simplify right side
    795.63x = 684,142.51
  5. Step 5: Solve for x
    x = 684,142.51/795.63
  6. Step 6: Final answer
    x = 859.88

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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.