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Finding the Fourth Proportional to 254.32, 350.92 and 156.16

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Solution

The fourth proportional to 254.32, 350.92 and 156.16 is: 215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.32 : 350.92 = 156.16 : x
  2. Step 2: Convert to fraction form
    254.32/350.92 = 156.16/x
  3. Step 3: Cross multiply
    254.32x = 350.92 × 156.16
  4. Step 4: Simplify right side
    254.32x = 54,799.67
  5. Step 5: Solve for x
    x = 54,799.67/254.32
  6. Step 6: Final answer
    x = 215.48

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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.