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Finding the Fourth Proportional to 2,970.36, 4,455.42 and 779.06

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Solution

The fourth proportional to 2,970.36, 4,455.42 and 779.06 is: 1,168.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.36 : 4,455.42 = 779.06 : x
  2. Step 2: Convert to fraction form
    2,970.36/4,455.42 = 779.06/x
  3. Step 3: Cross multiply
    2,970.36x = 4,455.42 × 779.06
  4. Step 4: Simplify right side
    2,970.36x = 3,471,039.51
  5. Step 5: Solve for x
    x = 3,471,039.51/2,970.36
  6. Step 6: Final answer
    x = 1,168.56

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.