Home / 1,277.02-1,915.55-455.33

Finding the Fourth Proportional to 1,277.02, 1,915.55 and 455.33

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Solution

The fourth proportional to 1,277.02, 1,915.55 and 455.33 is: 683.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.02 : 1,915.55 = 455.33 : x
  2. Step 2: Convert to fraction form
    1,277.02/1,915.55 = 455.33/x
  3. Step 3: Cross multiply
    1,277.02x = 1,915.55 × 455.33
  4. Step 4: Simplify right side
    1,277.02x = 872,207.38
  5. Step 5: Solve for x
    x = 872,207.38/1,277.02
  6. Step 6: Final answer
    x = 683.00

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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.