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Finding the Fourth Proportional to 1,746.22, 2,617.89 and 719.50

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Solution

The fourth proportional to 1,746.22, 2,617.89 and 719.50 is: 1,078.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,746.22 : 2,617.89 = 719.50 : x
  2. Step 2: Convert to fraction form
    1,746.22/2,617.89 = 719.50/x
  3. Step 3: Cross multiply
    1,746.22x = 2,617.89 × 719.50
  4. Step 4: Simplify right side
    1,746.22x = 1,883,571.86
  5. Step 5: Solve for x
    x = 1,883,571.86/1,746.22
  6. Step 6: Final answer
    x = 1,078.66

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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.