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Finding the Fourth Proportional to 350.97, 526.45 and 142.72

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Solution

The fourth proportional to 350.97, 526.45 and 142.72 is: 214.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.97 : 526.45 = 142.72 : x
  2. Step 2: Convert to fraction form
    350.97/526.45 = 142.72/x
  3. Step 3: Cross multiply
    350.97x = 526.45 × 142.72
  4. Step 4: Simplify right side
    350.97x = 75,135.02
  5. Step 5: Solve for x
    x = 75,135.02/350.97
  6. Step 6: Final answer
    x = 214.08

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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.