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Finding the Fourth Proportional to 438.88, 603.60 and 359.60

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Solution

The fourth proportional to 438.88, 603.60 and 359.60 is: 494.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.88 : 603.60 = 359.60 : x
  2. Step 2: Convert to fraction form
    438.88/603.60 = 359.60/x
  3. Step 3: Cross multiply
    438.88x = 603.60 × 359.60
  4. Step 4: Simplify right side
    438.88x = 217,054.56
  5. Step 5: Solve for x
    x = 217,054.56/438.88
  6. Step 6: Final answer
    x = 494.56

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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.