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Finding the Fourth Proportional to 436.45, 602.23 and 279.22

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Solution

The fourth proportional to 436.45, 602.23 and 279.22 is: 385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.45 : 602.23 = 279.22 : x
  2. Step 2: Convert to fraction form
    436.45/602.23 = 279.22/x
  3. Step 3: Cross multiply
    436.45x = 602.23 × 279.22
  4. Step 4: Simplify right side
    436.45x = 168,152.48
  5. Step 5: Solve for x
    x = 168,152.48/436.45
  6. Step 6: Final answer
    x = 385.28

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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.