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Finding the Fourth Proportional to 637.34, 878.72 and 415.94

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Solution

The fourth proportional to 637.34, 878.72 and 415.94 is: 573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.34 : 878.72 = 415.94 : x
  2. Step 2: Convert to fraction form
    637.34/878.72 = 415.94/x
  3. Step 3: Cross multiply
    637.34x = 878.72 × 415.94
  4. Step 4: Simplify right side
    637.34x = 365,488.32
  5. Step 5: Solve for x
    x = 365,488.32/637.34
  6. Step 6: Final answer
    x = 573.46

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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.