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Finding the Fourth Proportional to 1,771.63, 2,657.45 and 617.38

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Solution

The fourth proportional to 1,771.63, 2,657.45 and 617.38 is: 926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.63 : 2,657.45 = 617.38 : x
  2. Step 2: Convert to fraction form
    1,771.63/2,657.45 = 617.38/x
  3. Step 3: Cross multiply
    1,771.63x = 2,657.45 × 617.38
  4. Step 4: Simplify right side
    1,771.63x = 1,640,656.48
  5. Step 5: Solve for x
    x = 1,640,656.48/1,771.63
  6. Step 6: Final answer
    x = 926.07

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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.