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Finding the Fourth Proportional to 1,539.07, 2,308.07 and 443.45

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Solution

The fourth proportional to 1,539.07, 2,308.07 and 443.45 is: 665.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.07 : 2,308.07 = 443.45 : x
  2. Step 2: Convert to fraction form
    1,539.07/2,308.07 = 443.45/x
  3. Step 3: Cross multiply
    1,539.07x = 2,308.07 × 443.45
  4. Step 4: Simplify right side
    1,539.07x = 1,023,520.52
  5. Step 5: Solve for x
    x = 1,023,520.52/1,539.07
  6. Step 6: Final answer
    x = 665.03

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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.