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Finding the Fourth Proportional to 612.94, 845.49 and 488.50

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Solution

The fourth proportional to 612.94, 845.49 and 488.50 is: 673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.94 : 845.49 = 488.50 : x
  2. Step 2: Convert to fraction form
    612.94/845.49 = 488.50/x
  3. Step 3: Cross multiply
    612.94x = 845.49 × 488.50
  4. Step 4: Simplify right side
    612.94x = 413,021.87
  5. Step 5: Solve for x
    x = 413,021.87/612.94
  6. Step 6: Final answer
    x = 673.84

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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.