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Finding the Fourth Proportional to 471.84, 708.23 and 309.64

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Solution

The fourth proportional to 471.84, 708.23 and 309.64 is: 464.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.84 : 708.23 = 309.64 : x
  2. Step 2: Convert to fraction form
    471.84/708.23 = 309.64/x
  3. Step 3: Cross multiply
    471.84x = 708.23 × 309.64
  4. Step 4: Simplify right side
    471.84x = 219,294.93
  5. Step 5: Solve for x
    x = 219,294.93/471.84
  6. Step 6: Final answer
    x = 464.76

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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.