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Finding the Fourth Proportional to 389.05, 583.58 and 183.71

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Solution

The fourth proportional to 389.05, 583.58 and 183.71 is: 275.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.05 : 583.58 = 183.71 : x
  2. Step 2: Convert to fraction form
    389.05/583.58 = 183.71/x
  3. Step 3: Cross multiply
    389.05x = 583.58 × 183.71
  4. Step 4: Simplify right side
    389.05x = 107,211.40
  5. Step 5: Solve for x
    x = 107,211.40/389.05
  6. Step 6: Final answer
    x = 275.57

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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.