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Finding the Fourth Proportional to 1,417.32, 2,126.07 and 443.34

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Solution

The fourth proportional to 1,417.32, 2,126.07 and 443.34 is: 665.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.32 : 2,126.07 = 443.34 : x
  2. Step 2: Convert to fraction form
    1,417.32/2,126.07 = 443.34/x
  3. Step 3: Cross multiply
    1,417.32x = 2,126.07 × 443.34
  4. Step 4: Simplify right side
    1,417.32x = 942,571.87
  5. Step 5: Solve for x
    x = 942,571.87/1,417.32
  6. Step 6: Final answer
    x = 665.04

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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.