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Finding the Fourth Proportional to 1,408.16, 2,112.41 and 586.99

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Solution

The fourth proportional to 1,408.16, 2,112.41 and 586.99 is: 880.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.16 : 2,112.41 = 586.99 : x
  2. Step 2: Convert to fraction form
    1,408.16/2,112.41 = 586.99/x
  3. Step 3: Cross multiply
    1,408.16x = 2,112.41 × 586.99
  4. Step 4: Simplify right side
    1,408.16x = 1,239,963.55
  5. Step 5: Solve for x
    x = 1,239,963.55/1,408.16
  6. Step 6: Final answer
    x = 880.56

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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.