Home / 1,316.36-1,974.81-451.28

Finding the Fourth Proportional to 1,316.36, 1,974.81 and 451.28

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Solution

The fourth proportional to 1,316.36, 1,974.81 and 451.28 is: 677.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.36 : 1,974.81 = 451.28 : x
  2. Step 2: Convert to fraction form
    1,316.36/1,974.81 = 451.28/x
  3. Step 3: Cross multiply
    1,316.36x = 1,974.81 × 451.28
  4. Step 4: Simplify right side
    1,316.36x = 891,192.26
  5. Step 5: Solve for x
    x = 891,192.26/1,316.36
  6. Step 6: Final answer
    x = 677.01

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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.