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Finding the Fourth Proportional to 254.60, 351.06 and 210.84

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Solution

The fourth proportional to 254.60, 351.06 and 210.84 is: 290.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.60 : 351.06 = 210.84 : x
  2. Step 2: Convert to fraction form
    254.60/351.06 = 210.84/x
  3. Step 3: Cross multiply
    254.60x = 351.06 × 210.84
  4. Step 4: Simplify right side
    254.60x = 74,017.49
  5. Step 5: Solve for x
    x = 74,017.49/254.60
  6. Step 6: Final answer
    x = 290.72

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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.