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Finding the Fourth Proportional to 250.12, 374.69 and 147.45

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Solution

The fourth proportional to 250.12, 374.69 and 147.45 is: 220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.12 : 374.69 = 147.45 : x
  2. Step 2: Convert to fraction form
    250.12/374.69 = 147.45/x
  3. Step 3: Cross multiply
    250.12x = 374.69 × 147.45
  4. Step 4: Simplify right side
    250.12x = 55,249.81
  5. Step 5: Solve for x
    x = 55,249.81/250.12
  6. Step 6: Final answer
    x = 220.89

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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.