Home / 1,265.74-1,746.83-768.50

Finding the Fourth Proportional to 1,265.74, 1,746.83 and 768.50

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Solution

The fourth proportional to 1,265.74, 1,746.83 and 768.50 is: 1,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.74 : 1,746.83 = 768.50 : x
  2. Step 2: Convert to fraction form
    1,265.74/1,746.83 = 768.50/x
  3. Step 3: Cross multiply
    1,265.74x = 1,746.83 × 768.50
  4. Step 4: Simplify right side
    1,265.74x = 1,342,442.00
  5. Step 5: Solve for x
    x = 1,342,442.00/1,265.74
  6. Step 6: Final answer
    x = 1,060.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.