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Finding the Fourth Proportional to 644.49, 888.69 and 504.36

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Solution

The fourth proportional to 644.49, 888.69 and 504.36 is: 695.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.49 : 888.69 = 504.36 : x
  2. Step 2: Convert to fraction form
    644.49/888.69 = 504.36/x
  3. Step 3: Cross multiply
    644.49x = 888.69 × 504.36
  4. Step 4: Simplify right side
    644.49x = 448,219.69
  5. Step 5: Solve for x
    x = 448,219.69/644.49
  6. Step 6: Final answer
    x = 695.46

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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.