Home / 1,110.03-1,665.30-416.70

Finding the Fourth Proportional to 1,110.03, 1,665.30 and 416.70

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Solution

The fourth proportional to 1,110.03, 1,665.30 and 416.70 is: 625.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.03 : 1,665.30 = 416.70 : x
  2. Step 2: Convert to fraction form
    1,110.03/1,665.30 = 416.70/x
  3. Step 3: Cross multiply
    1,110.03x = 1,665.30 × 416.70
  4. Step 4: Simplify right side
    1,110.03x = 693,930.51
  5. Step 5: Solve for x
    x = 693,930.51/1,110.03
  6. Step 6: Final answer
    x = 625.15

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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.