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Finding the Fourth Proportional to 436.26, 602.04 and 288.90

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Solution

The fourth proportional to 436.26, 602.04 and 288.90 is: 398.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.26 : 602.04 = 288.90 : x
  2. Step 2: Convert to fraction form
    436.26/602.04 = 288.90/x
  3. Step 3: Cross multiply
    436.26x = 602.04 × 288.90
  4. Step 4: Simplify right side
    436.26x = 173,929.36
  5. Step 5: Solve for x
    x = 173,929.36/436.26
  6. Step 6: Final answer
    x = 398.68

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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.