Home / 930.27-1,395.17-272.15

Finding the Fourth Proportional to 930.27, 1,395.17 and 272.15

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Solution

The fourth proportional to 930.27, 1,395.17 and 272.15 is: 408.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.27 : 1,395.17 = 272.15 : x
  2. Step 2: Convert to fraction form
    930.27/1,395.17 = 272.15/x
  3. Step 3: Cross multiply
    930.27x = 1,395.17 × 272.15
  4. Step 4: Simplify right side
    930.27x = 379,695.52
  5. Step 5: Solve for x
    x = 379,695.52/930.27
  6. Step 6: Final answer
    x = 408.16

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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.