Home / 1,110.04-1,665.21-416.65

Finding the Fourth Proportional to 1,110.04, 1,665.21 and 416.65

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Solution

The fourth proportional to 1,110.04, 1,665.21 and 416.65 is: 625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.04 : 1,665.21 = 416.65 : x
  2. Step 2: Convert to fraction form
    1,110.04/1,665.21 = 416.65/x
  3. Step 3: Cross multiply
    1,110.04x = 1,665.21 × 416.65
  4. Step 4: Simplify right side
    1,110.04x = 693,809.75
  5. Step 5: Solve for x
    x = 693,809.75/1,110.04
  6. Step 6: Final answer
    x = 625.03

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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.