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Finding the Fourth Proportional to 637.68, 878.10 and 554.82

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Solution

The fourth proportional to 637.68, 878.10 and 554.82 is: 764.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.68 : 878.10 = 554.82 : x
  2. Step 2: Convert to fraction form
    637.68/878.10 = 554.82/x
  3. Step 3: Cross multiply
    637.68x = 878.10 × 554.82
  4. Step 4: Simplify right side
    637.68x = 487,187.44
  5. Step 5: Solve for x
    x = 487,187.44/637.68
  6. Step 6: Final answer
    x = 764.00

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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.