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Finding the Fourth Proportional to 797.16, 1,195.89 and 310.15

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Solution

The fourth proportional to 797.16, 1,195.89 and 310.15 is: 465.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.16 : 1,195.89 = 310.15 : x
  2. Step 2: Convert to fraction form
    797.16/1,195.89 = 310.15/x
  3. Step 3: Cross multiply
    797.16x = 1,195.89 × 310.15
  4. Step 4: Simplify right side
    797.16x = 370,905.28
  5. Step 5: Solve for x
    x = 370,905.28/797.16
  6. Step 6: Final answer
    x = 465.28

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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.