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Finding the Fourth Proportional to 1,439.03, 2,158.94 and 465.41

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Solution

The fourth proportional to 1,439.03, 2,158.94 and 465.41 is: 698.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.03 : 2,158.94 = 465.41 : x
  2. Step 2: Convert to fraction form
    1,439.03/2,158.94 = 465.41/x
  3. Step 3: Cross multiply
    1,439.03x = 2,158.94 × 465.41
  4. Step 4: Simplify right side
    1,439.03x = 1,004,798.83
  5. Step 5: Solve for x
    x = 1,004,798.83/1,439.03
  6. Step 6: Final answer
    x = 698.25

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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.