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Finding the Fourth Proportional to 366.25, 505.62 and 281.53

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Solution

The fourth proportional to 366.25, 505.62 and 281.53 is: 388.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.25 : 505.62 = 281.53 : x
  2. Step 2: Convert to fraction form
    366.25/505.62 = 281.53/x
  3. Step 3: Cross multiply
    366.25x = 505.62 × 281.53
  4. Step 4: Simplify right side
    366.25x = 142,347.20
  5. Step 5: Solve for x
    x = 142,347.20/366.25
  6. Step 6: Final answer
    x = 388.66

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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.