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Finding the Fourth Proportional to 1,493.40, 2,239.56 and 627.42

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Solution

The fourth proportional to 1,493.40, 2,239.56 and 627.42 is: 940.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493.40 : 2,239.56 = 627.42 : x
  2. Step 2: Convert to fraction form
    1,493.40/2,239.56 = 627.42/x
  3. Step 3: Cross multiply
    1,493.40x = 2,239.56 × 627.42
  4. Step 4: Simplify right side
    1,493.40x = 1,405,144.74
  5. Step 5: Solve for x
    x = 1,405,144.74/1,493.40
  6. Step 6: Final answer
    x = 940.90

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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.