Home / 1,277.07-1,915.75-455.46

Finding the Fourth Proportional to 1,277.07, 1,915.75 and 455.46

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Solution

The fourth proportional to 1,277.07, 1,915.75 and 455.46 is: 683.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.07 : 1,915.75 = 455.46 : x
  2. Step 2: Convert to fraction form
    1,277.07/1,915.75 = 455.46/x
  3. Step 3: Cross multiply
    1,277.07x = 1,915.75 × 455.46
  4. Step 4: Simplify right side
    1,277.07x = 872,543.27
  5. Step 5: Solve for x
    x = 872,543.27/1,277.07
  6. Step 6: Final answer
    x = 683.24

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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.