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Finding the Fourth Proportional to 277.02, 381.45 and 240.18

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Solution

The fourth proportional to 277.02, 381.45 and 240.18 is: 330.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.02 : 381.45 = 240.18 : x
  2. Step 2: Convert to fraction form
    277.02/381.45 = 240.18/x
  3. Step 3: Cross multiply
    277.02x = 381.45 × 240.18
  4. Step 4: Simplify right side
    277.02x = 91,616.66
  5. Step 5: Solve for x
    x = 91,616.66/277.02
  6. Step 6: Final answer
    x = 330.72

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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.