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Finding the Fourth Proportional to 436.37, 602.18 and 239.87

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Solution

The fourth proportional to 436.37, 602.18 and 239.87 is: 331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.37 : 602.18 = 239.87 : x
  2. Step 2: Convert to fraction form
    436.37/602.18 = 239.87/x
  3. Step 3: Cross multiply
    436.37x = 602.18 × 239.87
  4. Step 4: Simplify right side
    436.37x = 144,447.02
  5. Step 5: Solve for x
    x = 144,447.02/436.37
  6. Step 6: Final answer
    x = 331.02

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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.