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Finding the Fourth Proportional to 535.39, 803.21 and 170.15

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Solution

The fourth proportional to 535.39, 803.21 and 170.15 is: 255.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.39 : 803.21 = 170.15 : x
  2. Step 2: Convert to fraction form
    535.39/803.21 = 170.15/x
  3. Step 3: Cross multiply
    535.39x = 803.21 × 170.15
  4. Step 4: Simplify right side
    535.39x = 136,666.18
  5. Step 5: Solve for x
    x = 136,666.18/535.39
  6. Step 6: Final answer
    x = 255.26

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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.