Home / 1,198.18-1,649.59-948.16

Finding the Fourth Proportional to 1,198.18, 1,649.59 and 948.16

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Solution

The fourth proportional to 1,198.18, 1,649.59 and 948.16 is: 1,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.18 : 1,649.59 = 948.16 : x
  2. Step 2: Convert to fraction form
    1,198.18/1,649.59 = 948.16/x
  3. Step 3: Cross multiply
    1,198.18x = 1,649.59 × 948.16
  4. Step 4: Simplify right side
    1,198.18x = 1,564,075.25
  5. Step 5: Solve for x
    x = 1,564,075.25/1,198.18
  6. Step 6: Final answer
    x = 1,305.38

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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.