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Finding the Fourth Proportional to 536.58, 803.70 and 331.20

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Solution

The fourth proportional to 536.58, 803.70 and 331.20 is: 496.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.58 : 803.70 = 331.20 : x
  2. Step 2: Convert to fraction form
    536.58/803.70 = 331.20/x
  3. Step 3: Cross multiply
    536.58x = 803.70 × 331.20
  4. Step 4: Simplify right side
    536.58x = 266,185.44
  5. Step 5: Solve for x
    x = 266,185.44/536.58
  6. Step 6: Final answer
    x = 496.08

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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.