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Finding the Fourth Proportional to 436.82, 602.64 and 281.66

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Solution

The fourth proportional to 436.82, 602.64 and 281.66 is: 388.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.82 : 602.64 = 281.66 : x
  2. Step 2: Convert to fraction form
    436.82/602.64 = 281.66/x
  3. Step 3: Cross multiply
    436.82x = 602.64 × 281.66
  4. Step 4: Simplify right side
    436.82x = 169,739.58
  5. Step 5: Solve for x
    x = 169,739.58/436.82
  6. Step 6: Final answer
    x = 388.58

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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.