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Finding the Fourth Proportional to 1,771.50, 2,657.39 and 617.25

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Solution

The fourth proportional to 1,771.50, 2,657.39 and 617.25 is: 925.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.50 : 2,657.39 = 617.25 : x
  2. Step 2: Convert to fraction form
    1,771.50/2,657.39 = 617.25/x
  3. Step 3: Cross multiply
    1,771.50x = 2,657.39 × 617.25
  4. Step 4: Simplify right side
    1,771.50x = 1,640,273.98
  5. Step 5: Solve for x
    x = 1,640,273.98/1,771.50
  6. Step 6: Final answer
    x = 925.92

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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.