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Finding the Fourth Proportional to 744.37, 1,114.48 and 378.37

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Solution

The fourth proportional to 744.37, 1,114.48 and 378.37 is: 566.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.37 : 1,114.48 = 378.37 : x
  2. Step 2: Convert to fraction form
    744.37/1,114.48 = 378.37/x
  3. Step 3: Cross multiply
    744.37x = 1,114.48 × 378.37
  4. Step 4: Simplify right side
    744.37x = 421,685.80
  5. Step 5: Solve for x
    x = 421,685.80/744.37
  6. Step 6: Final answer
    x = 566.50

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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.