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Finding the Fourth Proportional to 436.99, 603.08 and 305.95

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Solution

The fourth proportional to 436.99, 603.08 and 305.95 is: 422.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.99 : 603.08 = 305.95 : x
  2. Step 2: Convert to fraction form
    436.99/603.08 = 305.95/x
  3. Step 3: Cross multiply
    436.99x = 603.08 × 305.95
  4. Step 4: Simplify right side
    436.99x = 184,512.33
  5. Step 5: Solve for x
    x = 184,512.33/436.99
  6. Step 6: Final answer
    x = 422.23

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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.