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Finding the Fourth Proportional to 355.77, 533.48 and 193.41

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Solution

The fourth proportional to 355.77, 533.48 and 193.41 is: 290.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.77 : 533.48 = 193.41 : x
  2. Step 2: Convert to fraction form
    355.77/533.48 = 193.41/x
  3. Step 3: Cross multiply
    355.77x = 533.48 × 193.41
  4. Step 4: Simplify right side
    355.77x = 103,179.40
  5. Step 5: Solve for x
    x = 103,179.40/355.77
  6. Step 6: Final answer
    x = 290.02

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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.