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Finding the Fourth Proportional to 1,568.40, 2,353.02 and 837.40

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Solution

The fourth proportional to 1,568.40, 2,353.02 and 837.40 is: 1,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.40 : 2,353.02 = 837.40 : x
  2. Step 2: Convert to fraction form
    1,568.40/2,353.02 = 837.40/x
  3. Step 3: Cross multiply
    1,568.40x = 2,353.02 × 837.40
  4. Step 4: Simplify right side
    1,568.40x = 1,970,418.95
  5. Step 5: Solve for x
    x = 1,970,418.95/1,568.40
  6. Step 6: Final answer
    x = 1,256.32

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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.