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Finding the Fourth Proportional to 1,432.03, 1,976.11 and 908.23

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Solution

The fourth proportional to 1,432.03, 1,976.11 and 908.23 is: 1,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.03 : 1,976.11 = 908.23 : x
  2. Step 2: Convert to fraction form
    1,432.03/1,976.11 = 908.23/x
  3. Step 3: Cross multiply
    1,432.03x = 1,976.11 × 908.23
  4. Step 4: Simplify right side
    1,432.03x = 1,794,762.39
  5. Step 5: Solve for x
    x = 1,794,762.39/1,432.03
  6. Step 6: Final answer
    x = 1,253.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.