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Finding the Fourth Proportional to 315.38, 435.21 and 182.58

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Solution

The fourth proportional to 315.38, 435.21 and 182.58 is: 251.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.38 : 435.21 = 182.58 : x
  2. Step 2: Convert to fraction form
    315.38/435.21 = 182.58/x
  3. Step 3: Cross multiply
    315.38x = 435.21 × 182.58
  4. Step 4: Simplify right side
    315.38x = 79,460.64
  5. Step 5: Solve for x
    x = 79,460.64/315.38
  6. Step 6: Final answer
    x = 251.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.