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Finding the Fourth Proportional to 277.60, 383.09 and 153.26

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Solution

The fourth proportional to 277.60, 383.09 and 153.26 is: 211.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.60 : 383.09 = 153.26 : x
  2. Step 2: Convert to fraction form
    277.60/383.09 = 153.26/x
  3. Step 3: Cross multiply
    277.60x = 383.09 × 153.26
  4. Step 4: Simplify right side
    277.60x = 58,712.37
  5. Step 5: Solve for x
    x = 58,712.37/277.60
  6. Step 6: Final answer
    x = 211.50

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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.