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Finding the Fourth Proportional to 277.67, 383.19 and 153.32

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Solution

The fourth proportional to 277.67, 383.19 and 153.32 is: 211.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.67 : 383.19 = 153.32 : x
  2. Step 2: Convert to fraction form
    277.67/383.19 = 153.32/x
  3. Step 3: Cross multiply
    277.67x = 383.19 × 153.32
  4. Step 4: Simplify right side
    277.67x = 58,751.08
  5. Step 5: Solve for x
    x = 58,751.08/277.67
  6. Step 6: Final answer
    x = 211.59

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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.