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Finding the Fourth Proportional to 336.32, 504.55 and 105.20

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Solution

The fourth proportional to 336.32, 504.55 and 105.20 is: 157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.32 : 504.55 = 105.20 : x
  2. Step 2: Convert to fraction form
    336.32/504.55 = 105.20/x
  3. Step 3: Cross multiply
    336.32x = 504.55 × 105.20
  4. Step 4: Simplify right side
    336.32x = 53,078.66
  5. Step 5: Solve for x
    x = 53,078.66/336.32
  6. Step 6: Final answer
    x = 157.82

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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.