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Finding the Fourth Proportional to 797.81, 1,099.32 and 763.25

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Solution

The fourth proportional to 797.81, 1,099.32 and 763.25 is: 1,051.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.81 : 1,099.32 = 763.25 : x
  2. Step 2: Convert to fraction form
    797.81/1,099.32 = 763.25/x
  3. Step 3: Cross multiply
    797.81x = 1,099.32 × 763.25
  4. Step 4: Simplify right side
    797.81x = 839,055.99
  5. Step 5: Solve for x
    x = 839,055.99/797.81
  6. Step 6: Final answer
    x = 1,051.70

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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.