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Finding the Fourth Proportional to 389.08, 583.82 and 183.63

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Solution

The fourth proportional to 389.08, 583.82 and 183.63 is: 275.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.08 : 583.82 = 183.63 : x
  2. Step 2: Convert to fraction form
    389.08/583.82 = 183.63/x
  3. Step 3: Cross multiply
    389.08x = 583.82 × 183.63
  4. Step 4: Simplify right side
    389.08x = 107,206.87
  5. Step 5: Solve for x
    x = 107,206.87/389.08
  6. Step 6: Final answer
    x = 275.54

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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.