Home / 1,180.16-1,628.68-656.18

Finding the Fourth Proportional to 1,180.16, 1,628.68 and 656.18

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Solution

The fourth proportional to 1,180.16, 1,628.68 and 656.18 is: 905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.16 : 1,628.68 = 656.18 : x
  2. Step 2: Convert to fraction form
    1,180.16/1,628.68 = 656.18/x
  3. Step 3: Cross multiply
    1,180.16x = 1,628.68 × 656.18
  4. Step 4: Simplify right side
    1,180.16x = 1,068,707.24
  5. Step 5: Solve for x
    x = 1,068,707.24/1,180.16
  6. Step 6: Final answer
    x = 905.56

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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.