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Finding the Fourth Proportional to 414.62, 572.01 and 283.40

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Solution

The fourth proportional to 414.62, 572.01 and 283.40 is: 390.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.62 : 572.01 = 283.40 : x
  2. Step 2: Convert to fraction form
    414.62/572.01 = 283.40/x
  3. Step 3: Cross multiply
    414.62x = 572.01 × 283.40
  4. Step 4: Simplify right side
    414.62x = 162,107.63
  5. Step 5: Solve for x
    x = 162,107.63/414.62
  6. Step 6: Final answer
    x = 390.98

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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.