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Finding the Fourth Proportional to 1,578.41, 2,366.23 and 653.39

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Solution

The fourth proportional to 1,578.41, 2,366.23 and 653.39 is: 979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.41 : 2,366.23 = 653.39 : x
  2. Step 2: Convert to fraction form
    1,578.41/2,366.23 = 653.39/x
  3. Step 3: Cross multiply
    1,578.41x = 2,366.23 × 653.39
  4. Step 4: Simplify right side
    1,578.41x = 1,546,071.02
  5. Step 5: Solve for x
    x = 1,546,071.02/1,578.41
  6. Step 6: Final answer
    x = 979.51

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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.