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Finding the Fourth Proportional to 1,441.87, 1,989.93 and 944.79

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Solution

The fourth proportional to 1,441.87, 1,989.93 and 944.79 is: 1,303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.87 : 1,989.93 = 944.79 : x
  2. Step 2: Convert to fraction form
    1,441.87/1,989.93 = 944.79/x
  3. Step 3: Cross multiply
    1,441.87x = 1,989.93 × 944.79
  4. Step 4: Simplify right side
    1,441.87x = 1,880,069.51
  5. Step 5: Solve for x
    x = 1,880,069.51/1,441.87
  6. Step 6: Final answer
    x = 1,303.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.