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Finding the Fourth Proportional to 389.00, 583.20 and 183.54

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Solution

The fourth proportional to 389.00, 583.20 and 183.54 is: 275.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.00 : 583.20 = 183.54 : x
  2. Step 2: Convert to fraction form
    389.00/583.20 = 183.54/x
  3. Step 3: Cross multiply
    389.00x = 583.20 × 183.54
  4. Step 4: Simplify right side
    389.00x = 107,040.53
  5. Step 5: Solve for x
    x = 107,040.53/389.00
  6. Step 6: Final answer
    x = 275.17

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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.