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Finding the Fourth Proportional to 798.51, 1,191.66 and 699.24

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Solution

The fourth proportional to 798.51, 1,191.66 and 699.24 is: 1,043.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.51 : 1,191.66 = 699.24 : x
  2. Step 2: Convert to fraction form
    798.51/1,191.66 = 699.24/x
  3. Step 3: Cross multiply
    798.51x = 1,191.66 × 699.24
  4. Step 4: Simplify right side
    798.51x = 833,256.34
  5. Step 5: Solve for x
    x = 833,256.34/798.51
  6. Step 6: Final answer
    x = 1,043.51

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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.