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Finding the Fourth Proportional to 355.83, 533.74 and 124.72

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Solution

The fourth proportional to 355.83, 533.74 and 124.72 is: 187.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.83 : 533.74 = 124.72 : x
  2. Step 2: Convert to fraction form
    355.83/533.74 = 124.72/x
  3. Step 3: Cross multiply
    355.83x = 533.74 × 124.72
  4. Step 4: Simplify right side
    355.83x = 66,568.05
  5. Step 5: Solve for x
    x = 66,568.05/355.83
  6. Step 6: Final answer
    x = 187.08

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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.