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Finding the Fourth Proportional to 436.86, 603.18 and 354.34

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Solution

The fourth proportional to 436.86, 603.18 and 354.34 is: 489.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.86 : 603.18 = 354.34 : x
  2. Step 2: Convert to fraction form
    436.86/603.18 = 354.34/x
  3. Step 3: Cross multiply
    436.86x = 603.18 × 354.34
  4. Step 4: Simplify right side
    436.86x = 213,730.80
  5. Step 5: Solve for x
    x = 213,730.80/436.86
  6. Step 6: Final answer
    x = 489.24

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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.