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Finding the Fourth Proportional to 254.17, 350.76 and 155.92

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Solution

The fourth proportional to 254.17, 350.76 and 155.92 is: 215.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.17 : 350.76 = 155.92 : x
  2. Step 2: Convert to fraction form
    254.17/350.76 = 155.92/x
  3. Step 3: Cross multiply
    254.17x = 350.76 × 155.92
  4. Step 4: Simplify right side
    254.17x = 54,690.50
  5. Step 5: Solve for x
    x = 54,690.50/254.17
  6. Step 6: Final answer
    x = 215.17

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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.