Home / 850.30-1,275.19-330.18

Finding the Fourth Proportional to 850.30, 1,275.19 and 330.18

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Solution

The fourth proportional to 850.30, 1,275.19 and 330.18 is: 495.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.30 : 1,275.19 = 330.18 : x
  2. Step 2: Convert to fraction form
    850.30/1,275.19 = 330.18/x
  3. Step 3: Cross multiply
    850.30x = 1,275.19 × 330.18
  4. Step 4: Simplify right side
    850.30x = 421,038.48
  5. Step 5: Solve for x
    x = 421,038.48/850.30
  6. Step 6: Final answer
    x = 495.17

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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.