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Finding the Fourth Proportional to 441.33, 657.62 and 392.87

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Solution

The fourth proportional to 441.33, 657.62 and 392.87 is: 585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.33 : 657.62 = 392.87 : x
  2. Step 2: Convert to fraction form
    441.33/657.62 = 392.87/x
  3. Step 3: Cross multiply
    441.33x = 657.62 × 392.87
  4. Step 4: Simplify right side
    441.33x = 258,353.92
  5. Step 5: Solve for x
    x = 258,353.92/441.33
  6. Step 6: Final answer
    x = 585.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.