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Finding the Fourth Proportional to 794.89, 1,097.52 and 515.29

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Solution

The fourth proportional to 794.89, 1,097.52 and 515.29 is: 711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.89 : 1,097.52 = 515.29 : x
  2. Step 2: Convert to fraction form
    794.89/1,097.52 = 515.29/x
  3. Step 3: Cross multiply
    794.89x = 1,097.52 × 515.29
  4. Step 4: Simplify right side
    794.89x = 565,541.08
  5. Step 5: Solve for x
    x = 565,541.08/794.89
  6. Step 6: Final answer
    x = 711.47

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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.