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Finding the Fourth Proportional to 644.44, 888.28 and 539.16

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Solution

The fourth proportional to 644.44, 888.28 and 539.16 is: 743.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.44 : 888.28 = 539.16 : x
  2. Step 2: Convert to fraction form
    644.44/888.28 = 539.16/x
  3. Step 3: Cross multiply
    644.44x = 888.28 × 539.16
  4. Step 4: Simplify right side
    644.44x = 478,925.04
  5. Step 5: Solve for x
    x = 478,925.04/644.44
  6. Step 6: Final answer
    x = 743.16

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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.