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Finding the Fourth Proportional to 472.73, 708.14 and 309.92

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Solution

The fourth proportional to 472.73, 708.14 and 309.92 is: 464.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.73 : 708.14 = 309.92 : x
  2. Step 2: Convert to fraction form
    472.73/708.14 = 309.92/x
  3. Step 3: Cross multiply
    472.73x = 708.14 × 309.92
  4. Step 4: Simplify right side
    472.73x = 219,461.66
  5. Step 5: Solve for x
    x = 219,461.66/472.73
  6. Step 6: Final answer
    x = 464.25

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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.