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Finding the Fourth Proportional to 436.85, 603.45 and 354.97

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Solution

The fourth proportional to 436.85, 603.45 and 354.97 is: 490.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.85 : 603.45 = 354.97 : x
  2. Step 2: Convert to fraction form
    436.85/603.45 = 354.97/x
  3. Step 3: Cross multiply
    436.85x = 603.45 × 354.97
  4. Step 4: Simplify right side
    436.85x = 214,206.65
  5. Step 5: Solve for x
    x = 214,206.65/436.85
  6. Step 6: Final answer
    x = 490.34

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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.