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Finding the Fourth Proportional to 535.66, 803.49 and 211.03

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Solution

The fourth proportional to 535.66, 803.49 and 211.03 is: 316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.66 : 803.49 = 211.03 : x
  2. Step 2: Convert to fraction form
    535.66/803.49 = 211.03/x
  3. Step 3: Cross multiply
    535.66x = 803.49 × 211.03
  4. Step 4: Simplify right side
    535.66x = 169,556.48
  5. Step 5: Solve for x
    x = 169,556.48/535.66
  6. Step 6: Final answer
    x = 316.54

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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.