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Finding the Fourth Proportional to 795.71, 1,097.87 and 515.99

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Solution

The fourth proportional to 795.71, 1,097.87 and 515.99 is: 711.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.71 : 1,097.87 = 515.99 : x
  2. Step 2: Convert to fraction form
    795.71/1,097.87 = 515.99/x
  3. Step 3: Cross multiply
    795.71x = 1,097.87 × 515.99
  4. Step 4: Simplify right side
    795.71x = 566,481.87
  5. Step 5: Solve for x
    x = 566,481.87/795.71
  6. Step 6: Final answer
    x = 711.92

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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.