Home / 1,225.29-1,838.67-445.36

Finding the Fourth Proportional to 1,225.29, 1,838.67 and 445.36

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Solution

The fourth proportional to 1,225.29, 1,838.67 and 445.36 is: 668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.29 : 1,838.67 = 445.36 : x
  2. Step 2: Convert to fraction form
    1,225.29/1,838.67 = 445.36/x
  3. Step 3: Cross multiply
    1,225.29x = 1,838.67 × 445.36
  4. Step 4: Simplify right side
    1,225.29x = 818,858.65
  5. Step 5: Solve for x
    x = 818,858.65/1,225.29
  6. Step 6: Final answer
    x = 668.30

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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.