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Finding the Fourth Proportional to 1,252.35, 1,879.25 and 558.99

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Solution

The fourth proportional to 1,252.35, 1,879.25 and 558.99 is: 838.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.35 : 1,879.25 = 558.99 : x
  2. Step 2: Convert to fraction form
    1,252.35/1,879.25 = 558.99/x
  3. Step 3: Cross multiply
    1,252.35x = 1,879.25 × 558.99
  4. Step 4: Simplify right side
    1,252.35x = 1,050,479.16
  5. Step 5: Solve for x
    x = 1,050,479.16/1,252.35
  6. Step 6: Final answer
    x = 838.81

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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.