Home / 1,088.04-1,629.80-721.66

Finding the Fourth Proportional to 1,088.04, 1,629.80 and 721.66

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Solution

The fourth proportional to 1,088.04, 1,629.80 and 721.66 is: 1,080.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.04 : 1,629.80 = 721.66 : x
  2. Step 2: Convert to fraction form
    1,088.04/1,629.80 = 721.66/x
  3. Step 3: Cross multiply
    1,088.04x = 1,629.80 × 721.66
  4. Step 4: Simplify right side
    1,088.04x = 1,176,161.47
  5. Step 5: Solve for x
    x = 1,176,161.47/1,088.04
  6. Step 6: Final answer
    x = 1,080.99

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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.