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Finding the Fourth Proportional to 350.28, 525.36 and 144.72

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Solution

The fourth proportional to 350.28, 525.36 and 144.72 is: 217.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.28 : 525.36 = 144.72 : x
  2. Step 2: Convert to fraction form
    350.28/525.36 = 144.72/x
  3. Step 3: Cross multiply
    350.28x = 525.36 × 144.72
  4. Step 4: Simplify right side
    350.28x = 76,030.10
  5. Step 5: Solve for x
    x = 76,030.10/350.28
  6. Step 6: Final answer
    x = 217.06

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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.