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Finding the Fourth Proportional to 301.35, 415.76 and 187.75

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Solution

The fourth proportional to 301.35, 415.76 and 187.75 is: 259.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.35 : 415.76 = 187.75 : x
  2. Step 2: Convert to fraction form
    301.35/415.76 = 187.75/x
  3. Step 3: Cross multiply
    301.35x = 415.76 × 187.75
  4. Step 4: Simplify right side
    301.35x = 78,056.96
  5. Step 5: Solve for x
    x = 78,056.96/301.35
  6. Step 6: Final answer
    x = 259.02

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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.