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Finding the Fourth Proportional to 1,766.22, 2,648.79 and 670.74

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Solution

The fourth proportional to 1,766.22, 2,648.79 and 670.74 is: 1,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.22 : 2,648.79 = 670.74 : x
  2. Step 2: Convert to fraction form
    1,766.22/2,648.79 = 670.74/x
  3. Step 3: Cross multiply
    1,766.22x = 2,648.79 × 670.74
  4. Step 4: Simplify right side
    1,766.22x = 1,776,649.40
  5. Step 5: Solve for x
    x = 1,776,649.40/1,766.22
  6. Step 6: Final answer
    x = 1,005.90

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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.