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Finding the Fourth Proportional to 794.82, 1,095.39 and 528.79

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Solution

The fourth proportional to 794.82, 1,095.39 and 528.79 is: 728.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.82 : 1,095.39 = 528.79 : x
  2. Step 2: Convert to fraction form
    794.82/1,095.39 = 528.79/x
  3. Step 3: Cross multiply
    794.82x = 1,095.39 × 528.79
  4. Step 4: Simplify right side
    794.82x = 579,231.28
  5. Step 5: Solve for x
    x = 579,231.28/794.82
  6. Step 6: Final answer
    x = 728.76

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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.