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Finding the Fourth Proportional to 355.54, 533.38 and 136.16

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Solution

The fourth proportional to 355.54, 533.38 and 136.16 is: 204.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.54 : 533.38 = 136.16 : x
  2. Step 2: Convert to fraction form
    355.54/533.38 = 136.16/x
  3. Step 3: Cross multiply
    355.54x = 533.38 × 136.16
  4. Step 4: Simplify right side
    355.54x = 72,621.67
  5. Step 5: Solve for x
    x = 72,621.67/355.54
  6. Step 6: Final answer
    x = 204.26

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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.