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Finding the Fourth Proportional to 793.68, 1,095.65 and 528.56

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Solution

The fourth proportional to 793.68, 1,095.65 and 528.56 is: 729.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.68 : 1,095.65 = 528.56 : x
  2. Step 2: Convert to fraction form
    793.68/1,095.65 = 528.56/x
  3. Step 3: Cross multiply
    793.68x = 1,095.65 × 528.56
  4. Step 4: Simplify right side
    793.68x = 579,113.74
  5. Step 5: Solve for x
    x = 579,113.74/793.68
  6. Step 6: Final answer
    x = 729.66

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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.