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Finding the Fourth Proportional to 563.81, 845.76 and 217.31

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Solution

The fourth proportional to 563.81, 845.76 and 217.31 is: 325.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.81 : 845.76 = 217.31 : x
  2. Step 2: Convert to fraction form
    563.81/845.76 = 217.31/x
  3. Step 3: Cross multiply
    563.81x = 845.76 × 217.31
  4. Step 4: Simplify right side
    563.81x = 183,792.11
  5. Step 5: Solve for x
    x = 183,792.11/563.81
  6. Step 6: Final answer
    x = 325.98

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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.