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Finding the Fourth Proportional to 644.04, 888.78 and 382.08

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Solution

The fourth proportional to 644.04, 888.78 and 382.08 is: 527.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.04 : 888.78 = 382.08 : x
  2. Step 2: Convert to fraction form
    644.04/888.78 = 382.08/x
  3. Step 3: Cross multiply
    644.04x = 888.78 × 382.08
  4. Step 4: Simplify right side
    644.04x = 339,585.06
  5. Step 5: Solve for x
    x = 339,585.06/644.04
  6. Step 6: Final answer
    x = 527.27

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1.5x scale

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.