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Finding the Fourth Proportional to 438.59, 605.45 and 333.69

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Solution

The fourth proportional to 438.59, 605.45 and 333.69 is: 460.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.59 : 605.45 = 333.69 : x
  2. Step 2: Convert to fraction form
    438.59/605.45 = 333.69/x
  3. Step 3: Cross multiply
    438.59x = 605.45 × 333.69
  4. Step 4: Simplify right side
    438.59x = 202,030.94
  5. Step 5: Solve for x
    x = 202,030.94/438.59
  6. Step 6: Final answer
    x = 460.64

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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.