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Finding the Fourth Proportional to 392.65, 540.62 and 333.52

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Solution

The fourth proportional to 392.65, 540.62 and 333.52 is: 459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.65 : 540.62 = 333.52 : x
  2. Step 2: Convert to fraction form
    392.65/540.62 = 333.52/x
  3. Step 3: Cross multiply
    392.65x = 540.62 × 333.52
  4. Step 4: Simplify right side
    392.65x = 180,305.81
  5. Step 5: Solve for x
    x = 180,305.81/392.65
  6. Step 6: Final answer
    x = 459.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.