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Finding the Fourth Proportional to 436.71, 602.46 and 279.30

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Solution

The fourth proportional to 436.71, 602.46 and 279.30 is: 385.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.71 : 602.46 = 279.30 : x
  2. Step 2: Convert to fraction form
    436.71/602.46 = 279.30/x
  3. Step 3: Cross multiply
    436.71x = 602.46 × 279.30
  4. Step 4: Simplify right side
    436.71x = 168,267.08
  5. Step 5: Solve for x
    x = 168,267.08/436.71
  6. Step 6: Final answer
    x = 385.31

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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.