Home / 850.28-1,275.21-302.58

Finding the Fourth Proportional to 850.28, 1,275.21 and 302.58

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Solution

The fourth proportional to 850.28, 1,275.21 and 302.58 is: 453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.28 : 1,275.21 = 302.58 : x
  2. Step 2: Convert to fraction form
    850.28/1,275.21 = 302.58/x
  3. Step 3: Cross multiply
    850.28x = 1,275.21 × 302.58
  4. Step 4: Simplify right side
    850.28x = 385,853.04
  5. Step 5: Solve for x
    x = 385,853.04/850.28
  6. Step 6: Final answer
    x = 453.80

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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.