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Finding the Fourth Proportional to 582.50, 873.60 and 217.25

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Solution

The fourth proportional to 582.50, 873.60 and 217.25 is: 325.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.50 : 873.60 = 217.25 : x
  2. Step 2: Convert to fraction form
    582.50/873.60 = 217.25/x
  3. Step 3: Cross multiply
    582.50x = 873.60 × 217.25
  4. Step 4: Simplify right side
    582.50x = 189,787.69
  5. Step 5: Solve for x
    x = 189,787.69/582.50
  6. Step 6: Final answer
    x = 325.81

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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.