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Finding the Fourth Proportional to 1,483.09, 2,224.91 and 661.36

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Solution

The fourth proportional to 1,483.09, 2,224.91 and 661.36 is: 992.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,483.09 : 2,224.91 = 661.36 : x
  2. Step 2: Convert to fraction form
    1,483.09/2,224.91 = 661.36/x
  3. Step 3: Cross multiply
    1,483.09x = 2,224.91 × 661.36
  4. Step 4: Simplify right side
    1,483.09x = 1,471,466.48
  5. Step 5: Solve for x
    x = 1,471,466.48/1,483.09
  6. Step 6: Final answer
    x = 992.16

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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.