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Finding the Fourth Proportional to 414.74, 571.65 and 283.52

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Solution

The fourth proportional to 414.74, 571.65 and 283.52 is: 390.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.74 : 571.65 = 283.52 : x
  2. Step 2: Convert to fraction form
    414.74/571.65 = 283.52/x
  3. Step 3: Cross multiply
    414.74x = 571.65 × 283.52
  4. Step 4: Simplify right side
    414.74x = 162,074.57
  5. Step 5: Solve for x
    x = 162,074.57/414.74
  6. Step 6: Final answer
    x = 390.78

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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.