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Finding the Fourth Proportional to 632.86, 872.59 and 433.79

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Solution

The fourth proportional to 632.86, 872.59 and 433.79 is: 598.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.86 : 872.59 = 433.79 : x
  2. Step 2: Convert to fraction form
    632.86/872.59 = 433.79/x
  3. Step 3: Cross multiply
    632.86x = 872.59 × 433.79
  4. Step 4: Simplify right side
    632.86x = 378,520.82
  5. Step 5: Solve for x
    x = 378,520.82/632.86
  6. Step 6: Final answer
    x = 598.11

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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.