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Finding the Fourth Proportional to 794.23, 1,095.66 and 528.80

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Solution

The fourth proportional to 794.23, 1,095.66 and 528.80 is: 729.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.23 : 1,095.66 = 528.80 : x
  2. Step 2: Convert to fraction form
    794.23/1,095.66 = 528.80/x
  3. Step 3: Cross multiply
    794.23x = 1,095.66 × 528.80
  4. Step 4: Simplify right side
    794.23x = 579,379.53
  5. Step 5: Solve for x
    x = 579,379.53/794.23
  6. Step 6: Final answer
    x = 729.49

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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.