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Finding the Fourth Proportional to 637.96, 880.08 and 401.80

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Solution

The fourth proportional to 637.96, 880.08 and 401.80 is: 554.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.96 : 880.08 = 401.80 : x
  2. Step 2: Convert to fraction form
    637.96/880.08 = 401.80/x
  3. Step 3: Cross multiply
    637.96x = 880.08 × 401.80
  4. Step 4: Simplify right side
    637.96x = 353,616.14
  5. Step 5: Solve for x
    x = 353,616.14/637.96
  6. Step 6: Final answer
    x = 554.29

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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.