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Finding the Fourth Proportional to 392.75, 585.93 and 373.61

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Solution

The fourth proportional to 392.75, 585.93 and 373.61 is: 557.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.75 : 585.93 = 373.61 : x
  2. Step 2: Convert to fraction form
    392.75/585.93 = 373.61/x
  3. Step 3: Cross multiply
    392.75x = 585.93 × 373.61
  4. Step 4: Simplify right side
    392.75x = 218,912.17
  5. Step 5: Solve for x
    x = 218,912.17/392.75
  6. Step 6: Final answer
    x = 557.38

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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.