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Finding the Fourth Proportional to 1,116.45, 1,674.09 and 375.80

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Solution

The fourth proportional to 1,116.45, 1,674.09 and 375.80 is: 563.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.45 : 1,674.09 = 375.80 : x
  2. Step 2: Convert to fraction form
    1,116.45/1,674.09 = 375.80/x
  3. Step 3: Cross multiply
    1,116.45x = 1,674.09 × 375.80
  4. Step 4: Simplify right side
    1,116.45x = 629,114.65
  5. Step 5: Solve for x
    x = 629,114.65/1,116.45
  6. Step 6: Final answer
    x = 563.50

Related Problems

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Double scale
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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.