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Finding the Fourth Proportional to 429.14, 643.71 and 332.75

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Solution

The fourth proportional to 429.14, 643.71 and 332.75 is: 499.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.14 : 643.71 = 332.75 : x
  2. Step 2: Convert to fraction form
    429.14/643.71 = 332.75/x
  3. Step 3: Cross multiply
    429.14x = 643.71 × 332.75
  4. Step 4: Simplify right side
    429.14x = 214,194.50
  5. Step 5: Solve for x
    x = 214,194.50/429.14
  6. Step 6: Final answer
    x = 499.13

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Double scale
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Similar ratio
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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.