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Finding the Fourth Proportional to 535.39, 803.17 and 170.05

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Solution

The fourth proportional to 535.39, 803.17 and 170.05 is: 255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.39 : 803.17 = 170.05 : x
  2. Step 2: Convert to fraction form
    535.39/803.17 = 170.05/x
  3. Step 3: Cross multiply
    535.39x = 803.17 × 170.05
  4. Step 4: Simplify right side
    535.39x = 136,578.21
  5. Step 5: Solve for x
    x = 136,578.21/535.39
  6. Step 6: Final answer
    x = 255.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.