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Finding the Fourth Proportional to 629.16, 868.49 and 433.34

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Solution

The fourth proportional to 629.16, 868.49 and 433.34 is: 598.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.16 : 868.49 = 433.34 : x
  2. Step 2: Convert to fraction form
    629.16/868.49 = 433.34/x
  3. Step 3: Cross multiply
    629.16x = 868.49 × 433.34
  4. Step 4: Simplify right side
    629.16x = 376,344.95
  5. Step 5: Solve for x
    x = 376,344.95/629.16
  6. Step 6: Final answer
    x = 598.17

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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.