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Finding the Fourth Proportional to 1,755.57, 2,631.74 and 659.19

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Solution

The fourth proportional to 1,755.57, 2,631.74 and 659.19 is: 988.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.57 : 2,631.74 = 659.19 : x
  2. Step 2: Convert to fraction form
    1,755.57/2,631.74 = 659.19/x
  3. Step 3: Cross multiply
    1,755.57x = 2,631.74 × 659.19
  4. Step 4: Simplify right side
    1,755.57x = 1,734,812.17
  5. Step 5: Solve for x
    x = 1,734,812.17/1,755.57
  6. Step 6: Final answer
    x = 988.17

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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.