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Finding the Fourth Proportional to 333.79, 501.65 and 309.31

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Solution

The fourth proportional to 333.79, 501.65 and 309.31 is: 464.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.79 : 501.65 = 309.31 : x
  2. Step 2: Convert to fraction form
    333.79/501.65 = 309.31/x
  3. Step 3: Cross multiply
    333.79x = 501.65 × 309.31
  4. Step 4: Simplify right side
    333.79x = 155,165.36
  5. Step 5: Solve for x
    x = 155,165.36/333.79
  6. Step 6: Final answer
    x = 464.86

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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.