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Finding the Fourth Proportional to 553.87, 831.00 and 348.21

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Solution

The fourth proportional to 553.87, 831.00 and 348.21 is: 522.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.87 : 831.00 = 348.21 : x
  2. Step 2: Convert to fraction form
    553.87/831.00 = 348.21/x
  3. Step 3: Cross multiply
    553.87x = 831.00 × 348.21
  4. Step 4: Simplify right side
    553.87x = 289,363.82
  5. Step 5: Solve for x
    x = 289,363.82/553.87
  6. Step 6: Final answer
    x = 522.44

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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.