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Finding the Fourth Proportional to 354.04, 487.88 and 255.62

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Solution

The fourth proportional to 354.04, 487.88 and 255.62 is: 352.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.04 : 487.88 = 255.62 : x
  2. Step 2: Convert to fraction form
    354.04/487.88 = 255.62/x
  3. Step 3: Cross multiply
    354.04x = 487.88 × 255.62
  4. Step 4: Simplify right side
    354.04x = 124,711.89
  5. Step 5: Solve for x
    x = 124,711.89/354.04
  6. Step 6: Final answer
    x = 352.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.