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Finding the Fourth Proportional to 637.65, 880.17 and 490.08

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Solution

The fourth proportional to 637.65, 880.17 and 490.08 is: 676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.65 : 880.17 = 490.08 : x
  2. Step 2: Convert to fraction form
    637.65/880.17 = 490.08/x
  3. Step 3: Cross multiply
    637.65x = 880.17 × 490.08
  4. Step 4: Simplify right side
    637.65x = 431,353.71
  5. Step 5: Solve for x
    x = 431,353.71/637.65
  6. Step 6: Final answer
    x = 676.47

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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.