Home / 850.40-1,275.76-302.60

Finding the Fourth Proportional to 850.40, 1,275.76 and 302.60

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Solution

The fourth proportional to 850.40, 1,275.76 and 302.60 is: 453.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.40 : 1,275.76 = 302.60 : x
  2. Step 2: Convert to fraction form
    850.40/1,275.76 = 302.60/x
  3. Step 3: Cross multiply
    850.40x = 1,275.76 × 302.60
  4. Step 4: Simplify right side
    850.40x = 386,044.98
  5. Step 5: Solve for x
    x = 386,044.98/850.40
  6. Step 6: Final answer
    x = 453.96

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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.