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Finding the Fourth Proportional to 612.69, 845.61 and 364.09

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Solution

The fourth proportional to 612.69, 845.61 and 364.09 is: 502.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.69 : 845.61 = 364.09 : x
  2. Step 2: Convert to fraction form
    612.69/845.61 = 364.09/x
  3. Step 3: Cross multiply
    612.69x = 845.61 × 364.09
  4. Step 4: Simplify right side
    612.69x = 307,876.03
  5. Step 5: Solve for x
    x = 307,876.03/612.69
  6. Step 6: Final answer
    x = 502.50

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1.5x scale

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.