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Finding the Fourth Proportional to 1,252.79, 1,879.22 and 375.30

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Solution

The fourth proportional to 1,252.79, 1,879.22 and 375.30 is: 562.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.79 : 1,879.22 = 375.30 : x
  2. Step 2: Convert to fraction form
    1,252.79/1,879.22 = 375.30/x
  3. Step 3: Cross multiply
    1,252.79x = 1,879.22 × 375.30
  4. Step 4: Simplify right side
    1,252.79x = 705,261.87
  5. Step 5: Solve for x
    x = 705,261.87/1,252.79
  6. Step 6: Final answer
    x = 562.96

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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.