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Finding the Fourth Proportional to 175.34, 261.27 and 156.20

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Solution

The fourth proportional to 175.34, 261.27 and 156.20 is: 232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.34 : 261.27 = 156.20 : x
  2. Step 2: Convert to fraction form
    175.34/261.27 = 156.20/x
  3. Step 3: Cross multiply
    175.34x = 261.27 × 156.20
  4. Step 4: Simplify right side
    175.34x = 40,809.07
  5. Step 5: Solve for x
    x = 40,809.07/175.34
  6. Step 6: Final answer
    x = 232.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.