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Finding the Fourth Proportional to 794.99, 1,096.71 and 515.31

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Solution

The fourth proportional to 794.99, 1,096.71 and 515.31 is: 710.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.99 : 1,096.71 = 515.31 : x
  2. Step 2: Convert to fraction form
    794.99/1,096.71 = 515.31/x
  3. Step 3: Cross multiply
    794.99x = 1,096.71 × 515.31
  4. Step 4: Simplify right side
    794.99x = 565,148.37
  5. Step 5: Solve for x
    x = 565,148.37/794.99
  6. Step 6: Final answer
    x = 710.89

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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.