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Finding the Fourth Proportional to 436.50, 603.15 and 324.91

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Solution

The fourth proportional to 436.50, 603.15 and 324.91 is: 448.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.50 : 603.15 = 324.91 : x
  2. Step 2: Convert to fraction form
    436.50/603.15 = 324.91/x
  3. Step 3: Cross multiply
    436.50x = 603.15 × 324.91
  4. Step 4: Simplify right side
    436.50x = 195,969.00
  5. Step 5: Solve for x
    x = 195,969.00/436.50
  6. Step 6: Final answer
    x = 448.96

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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.