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Finding the Fourth Proportional to 254.64, 351.26 and 210.28

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Solution

The fourth proportional to 254.64, 351.26 and 210.28 is: 290.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.64 : 351.26 = 210.28 : x
  2. Step 2: Convert to fraction form
    254.64/351.26 = 210.28/x
  3. Step 3: Cross multiply
    254.64x = 351.26 × 210.28
  4. Step 4: Simplify right side
    254.64x = 73,862.95
  5. Step 5: Solve for x
    x = 73,862.95/254.64
  6. Step 6: Final answer
    x = 290.07

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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.