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Finding the Fourth Proportional to 850.92, 1,275.66 and 302.94

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Solution

The fourth proportional to 850.92, 1,275.66 and 302.94 is: 454.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.92 : 1,275.66 = 302.94 : x
  2. Step 2: Convert to fraction form
    850.92/1,275.66 = 302.94/x
  3. Step 3: Cross multiply
    850.92x = 1,275.66 × 302.94
  4. Step 4: Simplify right side
    850.92x = 386,448.44
  5. Step 5: Solve for x
    x = 386,448.44/850.92
  6. Step 6: Final answer
    x = 454.15

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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.