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Finding the Fourth Proportional to 333.33, 459.83 and 309.89

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Solution

The fourth proportional to 333.33, 459.83 and 309.89 is: 427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.33 : 459.83 = 309.89 : x
  2. Step 2: Convert to fraction form
    333.33/459.83 = 309.89/x
  3. Step 3: Cross multiply
    333.33x = 459.83 × 309.89
  4. Step 4: Simplify right side
    333.33x = 142,492.87
  5. Step 5: Solve for x
    x = 142,492.87/333.33
  6. Step 6: Final answer
    x = 427.48

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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.