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Finding the Fourth Proportional to 350.90, 526.20 and 204.80

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Solution

The fourth proportional to 350.90, 526.20 and 204.80 is: 307.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.90 : 526.20 = 204.80 : x
  2. Step 2: Convert to fraction form
    350.90/526.20 = 204.80/x
  3. Step 3: Cross multiply
    350.90x = 526.20 × 204.80
  4. Step 4: Simplify right side
    350.90x = 107,765.76
  5. Step 5: Solve for x
    x = 107,765.76/350.90
  6. Step 6: Final answer
    x = 307.11

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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.