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Finding the Fourth Proportional to 389.25, 583.04 and 183.51

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Solution

The fourth proportional to 389.25, 583.04 and 183.51 is: 274.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.25 : 583.04 = 183.51 : x
  2. Step 2: Convert to fraction form
    389.25/583.04 = 183.51/x
  3. Step 3: Cross multiply
    389.25x = 583.04 × 183.51
  4. Step 4: Simplify right side
    389.25x = 106,992.75
  5. Step 5: Solve for x
    x = 106,992.75/389.25
  6. Step 6: Final answer
    x = 274.87

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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.