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Finding the Fourth Proportional to 350.90, 526.48 and 145.56

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Solution

The fourth proportional to 350.90, 526.48 and 145.56 is: 218.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.90 : 526.48 = 145.56 : x
  2. Step 2: Convert to fraction form
    350.90/526.48 = 145.56/x
  3. Step 3: Cross multiply
    350.90x = 526.48 × 145.56
  4. Step 4: Simplify right side
    350.90x = 76,634.43
  5. Step 5: Solve for x
    x = 76,634.43/350.90
  6. Step 6: Final answer
    x = 218.39

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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.