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Finding the Fourth Proportional to 438.79, 603.72 and 333.26

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Solution

The fourth proportional to 438.79, 603.72 and 333.26 is: 458.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.79 : 603.72 = 333.26 : x
  2. Step 2: Convert to fraction form
    438.79/603.72 = 333.26/x
  3. Step 3: Cross multiply
    438.79x = 603.72 × 333.26
  4. Step 4: Simplify right side
    438.79x = 201,196.96
  5. Step 5: Solve for x
    x = 201,196.96/438.79
  6. Step 6: Final answer
    x = 458.52

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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.