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Finding the Fourth Proportional to 1,014.75, 1,522.13 and 438.03

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Solution

The fourth proportional to 1,014.75, 1,522.13 and 438.03 is: 657.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.75 : 1,522.13 = 438.03 : x
  2. Step 2: Convert to fraction form
    1,014.75/1,522.13 = 438.03/x
  3. Step 3: Cross multiply
    1,014.75x = 1,522.13 × 438.03
  4. Step 4: Simplify right side
    1,014.75x = 666,736.41
  5. Step 5: Solve for x
    x = 666,736.41/1,014.75
  6. Step 6: Final answer
    x = 657.05

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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.