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Finding the Fourth Proportional to 1,216.41, 1,824.90 and 394.67

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Solution

The fourth proportional to 1,216.41, 1,824.90 and 394.67 is: 592.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.41 : 1,824.90 = 394.67 : x
  2. Step 2: Convert to fraction form
    1,216.41/1,824.90 = 394.67/x
  3. Step 3: Cross multiply
    1,216.41x = 1,824.90 × 394.67
  4. Step 4: Simplify right side
    1,216.41x = 720,236.37
  5. Step 5: Solve for x
    x = 720,236.37/1,216.41
  6. Step 6: Final answer
    x = 592.10

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1.5x scale

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.