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Finding the Fourth Proportional to 254.37, 350.70 and 209.95

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Solution

The fourth proportional to 254.37, 350.70 and 209.95 is: 289.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.37 : 350.70 = 209.95 : x
  2. Step 2: Convert to fraction form
    254.37/350.70 = 209.95/x
  3. Step 3: Cross multiply
    254.37x = 350.70 × 209.95
  4. Step 4: Simplify right side
    254.37x = 73,629.47
  5. Step 5: Solve for x
    x = 73,629.47/254.37
  6. Step 6: Final answer
    x = 289.46

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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.