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Finding the Fourth Proportional to 277.19, 415.58 and 168.85

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Solution

The fourth proportional to 277.19, 415.58 and 168.85 is: 253.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.19 : 415.58 = 168.85 : x
  2. Step 2: Convert to fraction form
    277.19/415.58 = 168.85/x
  3. Step 3: Cross multiply
    277.19x = 415.58 × 168.85
  4. Step 4: Simplify right side
    277.19x = 70,168.80
  5. Step 5: Solve for x
    x = 70,168.80/277.19
  6. Step 6: Final answer
    x = 253.15

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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.