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Finding the Fourth Proportional to 1,579.89, 2,370.36 and 657.24

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Solution

The fourth proportional to 1,579.89, 2,370.36 and 657.24 is: 986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.89 : 2,370.36 = 657.24 : x
  2. Step 2: Convert to fraction form
    1,579.89/2,370.36 = 657.24/x
  3. Step 3: Cross multiply
    1,579.89x = 2,370.36 × 657.24
  4. Step 4: Simplify right side
    1,579.89x = 1,557,895.41
  5. Step 5: Solve for x
    x = 1,557,895.41/1,579.89
  6. Step 6: Final answer
    x = 986.08

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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.