Home / 1,309.75-1,964.67-444.13

Finding the Fourth Proportional to 1,309.75, 1,964.67 and 444.13

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Solution

The fourth proportional to 1,309.75, 1,964.67 and 444.13 is: 666.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309.75 : 1,964.67 = 444.13 : x
  2. Step 2: Convert to fraction form
    1,309.75/1,964.67 = 444.13/x
  3. Step 3: Cross multiply
    1,309.75x = 1,964.67 × 444.13
  4. Step 4: Simplify right side
    1,309.75x = 872,568.89
  5. Step 5: Solve for x
    x = 872,568.89/1,309.75
  6. Step 6: Final answer
    x = 666.21

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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.