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Finding the Fourth Proportional to 436.68, 602.39 and 405.41

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Solution

The fourth proportional to 436.68, 602.39 and 405.41 is: 559.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.68 : 602.39 = 405.41 : x
  2. Step 2: Convert to fraction form
    436.68/602.39 = 405.41/x
  3. Step 3: Cross multiply
    436.68x = 602.39 × 405.41
  4. Step 4: Simplify right side
    436.68x = 244,209.89
  5. Step 5: Solve for x
    x = 244,209.89/436.68
  6. Step 6: Final answer
    x = 559.24

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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.