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Finding the Fourth Proportional to 477.97, 659.56 and 281.45

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Solution

The fourth proportional to 477.97, 659.56 and 281.45 is: 388.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.97 : 659.56 = 281.45 : x
  2. Step 2: Convert to fraction form
    477.97/659.56 = 281.45/x
  3. Step 3: Cross multiply
    477.97x = 659.56 × 281.45
  4. Step 4: Simplify right side
    477.97x = 185,631.75
  5. Step 5: Solve for x
    x = 185,631.75/477.97
  6. Step 6: Final answer
    x = 388.38

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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.