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Finding the Fourth Proportional to 809.94, 1,213.95 and 463.52

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Solution

The fourth proportional to 809.94, 1,213.95 and 463.52 is: 694.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    809.94 : 1,213.95 = 463.52 : x
  2. Step 2: Convert to fraction form
    809.94/1,213.95 = 463.52/x
  3. Step 3: Cross multiply
    809.94x = 1,213.95 × 463.52
  4. Step 4: Simplify right side
    809.94x = 562,688.05
  5. Step 5: Solve for x
    x = 562,688.05/809.94
  6. Step 6: Final answer
    x = 694.72

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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.