Home / 1,080.27-1,490.67-632.07

Finding the Fourth Proportional to 1,080.27, 1,490.67 and 632.07

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Solution

The fourth proportional to 1,080.27, 1,490.67 and 632.07 is: 872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.27 : 1,490.67 = 632.07 : x
  2. Step 2: Convert to fraction form
    1,080.27/1,490.67 = 632.07/x
  3. Step 3: Cross multiply
    1,080.27x = 1,490.67 × 632.07
  4. Step 4: Simplify right side
    1,080.27x = 942,207.79
  5. Step 5: Solve for x
    x = 942,207.79/1,080.27
  6. Step 6: Final answer
    x = 872.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.