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Finding the Fourth Proportional to 836, 1,254.03 and 258.88

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Solution

The fourth proportional to 836, 1,254.03 and 258.88 is: 388.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    836 : 1,254.03 = 258.88 : x
  2. Step 2: Convert to fraction form
    836/1,254.03 = 258.88/x
  3. Step 3: Cross multiply
    836x = 1,254.03 × 258.88
  4. Step 4: Simplify right side
    836x = 324,635.72
  5. Step 5: Solve for x
    x = 324,635.72/836
  6. Step 6: Final answer
    x = 388.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.