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Finding the Fourth Proportional to 1,262.15, 1,892.14 and 440.32

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Solution

The fourth proportional to 1,262.15, 1,892.14 and 440.32 is: 660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.15 : 1,892.14 = 440.32 : x
  2. Step 2: Convert to fraction form
    1,262.15/1,892.14 = 440.32/x
  3. Step 3: Cross multiply
    1,262.15x = 1,892.14 × 440.32
  4. Step 4: Simplify right side
    1,262.15x = 833,147.08
  5. Step 5: Solve for x
    x = 833,147.08/1,262.15
  6. Step 6: Final answer
    x = 660.10

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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.