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Finding the Fourth Proportional to 1,254.84, 1,879.83 and 964.86

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Solution

The fourth proportional to 1,254.84, 1,879.83 and 964.86 is: 1,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.84 : 1,879.83 = 964.86 : x
  2. Step 2: Convert to fraction form
    1,254.84/1,879.83 = 964.86/x
  3. Step 3: Cross multiply
    1,254.84x = 1,879.83 × 964.86
  4. Step 4: Simplify right side
    1,254.84x = 1,813,772.77
  5. Step 5: Solve for x
    x = 1,813,772.77/1,254.84
  6. Step 6: Final answer
    x = 1,445.42

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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.