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Finding the Fourth Proportional to 360.60, 540.88 and 113.80

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Solution

The fourth proportional to 360.60, 540.88 and 113.80 is: 170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.60 : 540.88 = 113.80 : x
  2. Step 2: Convert to fraction form
    360.60/540.88 = 113.80/x
  3. Step 3: Cross multiply
    360.60x = 540.88 × 113.80
  4. Step 4: Simplify right side
    360.60x = 61,550.51
  5. Step 5: Solve for x
    x = 61,550.51/360.60
  6. Step 6: Final answer
    x = 170.69

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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.