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Finding the Fourth Proportional to 535.50, 803.36 and 210.88

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Solution

The fourth proportional to 535.50, 803.36 and 210.88 is: 316.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.50 : 803.36 = 210.88 : x
  2. Step 2: Convert to fraction form
    535.50/803.36 = 210.88/x
  3. Step 3: Cross multiply
    535.50x = 803.36 × 210.88
  4. Step 4: Simplify right side
    535.50x = 169,412.56
  5. Step 5: Solve for x
    x = 169,412.56/535.50
  6. Step 6: Final answer
    x = 316.36

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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.