Home / 1,277.98-1,917.07-456.30

Finding the Fourth Proportional to 1,277.98, 1,917.07 and 456.30

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Solution

The fourth proportional to 1,277.98, 1,917.07 and 456.30 is: 684.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.98 : 1,917.07 = 456.30 : x
  2. Step 2: Convert to fraction form
    1,277.98/1,917.07 = 456.30/x
  3. Step 3: Cross multiply
    1,277.98x = 1,917.07 × 456.30
  4. Step 4: Simplify right side
    1,277.98x = 874,757.90
  5. Step 5: Solve for x
    x = 874,757.90/1,277.98
  6. Step 6: Final answer
    x = 684.49

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1.5x scale

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.