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Finding the Fourth Proportional to 1,579.56, 2,368.36 and 655.75

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Solution

The fourth proportional to 1,579.56, 2,368.36 and 655.75 is: 983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.56 : 2,368.36 = 655.75 : x
  2. Step 2: Convert to fraction form
    1,579.56/2,368.36 = 655.75/x
  3. Step 3: Cross multiply
    1,579.56x = 2,368.36 × 655.75
  4. Step 4: Simplify right side
    1,579.56x = 1,553,052.07
  5. Step 5: Solve for x
    x = 1,553,052.07/1,579.56
  6. Step 6: Final answer
    x = 983.22

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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.