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Finding the Fourth Proportional to 392.14, 585.19 and 359.03

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Solution

The fourth proportional to 392.14, 585.19 and 359.03 is: 535.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.14 : 585.19 = 359.03 : x
  2. Step 2: Convert to fraction form
    392.14/585.19 = 359.03/x
  3. Step 3: Cross multiply
    392.14x = 585.19 × 359.03
  4. Step 4: Simplify right side
    392.14x = 210,096.94
  5. Step 5: Solve for x
    x = 210,096.94/392.14
  6. Step 6: Final answer
    x = 535.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.