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Finding the Fourth Proportional to 429.59, 644.93 and 333.47

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Solution

The fourth proportional to 429.59, 644.93 and 333.47 is: 500.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.59 : 644.93 = 333.47 : x
  2. Step 2: Convert to fraction form
    429.59/644.93 = 333.47/x
  3. Step 3: Cross multiply
    429.59x = 644.93 × 333.47
  4. Step 4: Simplify right side
    429.59x = 215,066.00
  5. Step 5: Solve for x
    x = 215,066.00/429.59
  6. Step 6: Final answer
    x = 500.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.