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Finding the Fourth Proportional to 272.63, 376.24 and 156.23

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Solution

The fourth proportional to 272.63, 376.24 and 156.23 is: 215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.63 : 376.24 = 156.23 : x
  2. Step 2: Convert to fraction form
    272.63/376.24 = 156.23/x
  3. Step 3: Cross multiply
    272.63x = 376.24 × 156.23
  4. Step 4: Simplify right side
    272.63x = 58,777.70
  5. Step 5: Solve for x
    x = 58,777.70/272.63
  6. Step 6: Final answer
    x = 215.60

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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.