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Finding the Fourth Proportional to 536.02, 803.46 and 193.78

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Solution

The fourth proportional to 536.02, 803.46 and 193.78 is: 290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.02 : 803.46 = 193.78 : x
  2. Step 2: Convert to fraction form
    536.02/803.46 = 193.78/x
  3. Step 3: Cross multiply
    536.02x = 803.46 × 193.78
  4. Step 4: Simplify right side
    536.02x = 155,694.48
  5. Step 5: Solve for x
    x = 155,694.48/536.02
  6. Step 6: Final answer
    x = 290.46

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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.