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Finding the Fourth Proportional to 644.82, 888.93 and 435.12

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Solution

The fourth proportional to 644.82, 888.93 and 435.12 is: 599.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.82 : 888.93 = 435.12 : x
  2. Step 2: Convert to fraction form
    644.82/888.93 = 435.12/x
  3. Step 3: Cross multiply
    644.82x = 888.93 × 435.12
  4. Step 4: Simplify right side
    644.82x = 386,791.22
  5. Step 5: Solve for x
    x = 386,791.22/644.82
  6. Step 6: Final answer
    x = 599.84

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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.