Home / 1,277.36-1,916.38-455.68

Finding the Fourth Proportional to 1,277.36, 1,916.38 and 455.68

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Solution

The fourth proportional to 1,277.36, 1,916.38 and 455.68 is: 683.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.36 : 1,916.38 = 455.68 : x
  2. Step 2: Convert to fraction form
    1,277.36/1,916.38 = 455.68/x
  3. Step 3: Cross multiply
    1,277.36x = 1,916.38 × 455.68
  4. Step 4: Simplify right side
    1,277.36x = 873,256.04
  5. Step 5: Solve for x
    x = 873,256.04/1,277.36
  6. Step 6: Final answer
    x = 683.64

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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.