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Finding the Fourth Proportional to 392.44, 584.57 and 373.72

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Solution

The fourth proportional to 392.44, 584.57 and 373.72 is: 556.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.44 : 584.57 = 373.72 : x
  2. Step 2: Convert to fraction form
    392.44/584.57 = 373.72/x
  3. Step 3: Cross multiply
    392.44x = 584.57 × 373.72
  4. Step 4: Simplify right side
    392.44x = 218,465.50
  5. Step 5: Solve for x
    x = 218,465.50/392.44
  6. Step 6: Final answer
    x = 556.69

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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.