Home / 1,110.51-1,665.77-288.80

Finding the Fourth Proportional to 1,110.51, 1,665.77 and 288.80

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Solution

The fourth proportional to 1,110.51, 1,665.77 and 288.80 is: 433.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.51 : 1,665.77 = 288.80 : x
  2. Step 2: Convert to fraction form
    1,110.51/1,665.77 = 288.80/x
  3. Step 3: Cross multiply
    1,110.51x = 1,665.77 × 288.80
  4. Step 4: Simplify right side
    1,110.51x = 481,064.60
  5. Step 5: Solve for x
    x = 481,064.60/1,110.51
  6. Step 6: Final answer
    x = 433.19

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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.