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Finding the Fourth Proportional to 254.36, 351.03 and 156.06

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Solution

The fourth proportional to 254.36, 351.03 and 156.06 is: 215.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.36 : 351.03 = 156.06 : x
  2. Step 2: Convert to fraction form
    254.36/351.03 = 156.06/x
  3. Step 3: Cross multiply
    254.36x = 351.03 × 156.06
  4. Step 4: Simplify right side
    254.36x = 54,781.74
  5. Step 5: Solve for x
    x = 54,781.74/254.36
  6. Step 6: Final answer
    x = 215.38

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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.