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Finding the Fourth Proportional to 535.02, 803.31 and 330.45

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Solution

The fourth proportional to 535.02, 803.31 and 330.45 is: 496.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.02 : 803.31 = 330.45 : x
  2. Step 2: Convert to fraction form
    535.02/803.31 = 330.45/x
  3. Step 3: Cross multiply
    535.02x = 803.31 × 330.45
  4. Step 4: Simplify right side
    535.02x = 265,453.79
  5. Step 5: Solve for x
    x = 265,453.79/535.02
  6. Step 6: Final answer
    x = 496.16

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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.