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Finding the Fourth Proportional to 1,980.82, 2,970.66 and 593.82

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Solution

The fourth proportional to 1,980.82, 2,970.66 and 593.82 is: 890.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.82 : 2,970.66 = 593.82 : x
  2. Step 2: Convert to fraction form
    1,980.82/2,970.66 = 593.82/x
  3. Step 3: Cross multiply
    1,980.82x = 2,970.66 × 593.82
  4. Step 4: Simplify right side
    1,980.82x = 1,764,037.32
  5. Step 5: Solve for x
    x = 1,764,037.32/1,980.82
  6. Step 6: Final answer
    x = 890.56

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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.