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Finding the Fourth Proportional to 358.06, 537.90 and 255.60

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Solution

The fourth proportional to 358.06, 537.90 and 255.60 is: 383.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.06 : 537.90 = 255.60 : x
  2. Step 2: Convert to fraction form
    358.06/537.90 = 255.60/x
  3. Step 3: Cross multiply
    358.06x = 537.90 × 255.60
  4. Step 4: Simplify right side
    358.06x = 137,487.24
  5. Step 5: Solve for x
    x = 137,487.24/358.06
  6. Step 6: Final answer
    x = 383.98

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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.