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Finding the Fourth Proportional to 114.32, 157.80 and 104.60

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Solution

The fourth proportional to 114.32, 157.80 and 104.60 is: 144.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.32 : 157.80 = 104.60 : x
  2. Step 2: Convert to fraction form
    114.32/157.80 = 104.60/x
  3. Step 3: Cross multiply
    114.32x = 157.80 × 104.60
  4. Step 4: Simplify right side
    114.32x = 16,505.88
  5. Step 5: Solve for x
    x = 16,505.88/114.32
  6. Step 6: Final answer
    x = 144.38

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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.