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Finding the Fourth Proportional to 277.48, 382.81 and 172.53

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Solution

The fourth proportional to 277.48, 382.81 and 172.53 is: 238.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.48 : 382.81 = 172.53 : x
  2. Step 2: Convert to fraction form
    277.48/382.81 = 172.53/x
  3. Step 3: Cross multiply
    277.48x = 382.81 × 172.53
  4. Step 4: Simplify right side
    277.48x = 66,046.21
  5. Step 5: Solve for x
    x = 66,046.21/277.48
  6. Step 6: Final answer
    x = 238.02

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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.