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Finding the Fourth Proportional to 582.35, 873.88 and 217.40

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Solution

The fourth proportional to 582.35, 873.88 and 217.40 is: 326.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.35 : 873.88 = 217.40 : x
  2. Step 2: Convert to fraction form
    582.35/873.88 = 217.40/x
  3. Step 3: Cross multiply
    582.35x = 873.88 × 217.40
  4. Step 4: Simplify right side
    582.35x = 189,983.15
  5. Step 5: Solve for x
    x = 189,983.15/582.35
  6. Step 6: Final answer
    x = 326.23

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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.