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Finding the Fourth Proportional to 1,178.09, 1,625.94 and 674.06

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Solution

The fourth proportional to 1,178.09, 1,625.94 and 674.06 is: 930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.09 : 1,625.94 = 674.06 : x
  2. Step 2: Convert to fraction form
    1,178.09/1,625.94 = 674.06/x
  3. Step 3: Cross multiply
    1,178.09x = 1,625.94 × 674.06
  4. Step 4: Simplify right side
    1,178.09x = 1,095,977.75
  5. Step 5: Solve for x
    x = 1,095,977.75/1,178.09
  6. Step 6: Final answer
    x = 930.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.