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Finding the Fourth Proportional to 389.25, 584.73 and 373.64

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Solution

The fourth proportional to 389.25, 584.73 and 373.64 is: 561.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.25 : 584.73 = 373.64 : x
  2. Step 2: Convert to fraction form
    389.25/584.73 = 373.64/x
  3. Step 3: Cross multiply
    389.25x = 584.73 × 373.64
  4. Step 4: Simplify right side
    389.25x = 218,475.59
  5. Step 5: Solve for x
    x = 218,475.59/389.25
  6. Step 6: Final answer
    x = 561.27

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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.