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Finding the Fourth Proportional to 1,297.06, 1,945.14 and 719.50

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Solution

The fourth proportional to 1,297.06, 1,945.14 and 719.50 is: 1,079.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.06 : 1,945.14 = 719.50 : x
  2. Step 2: Convert to fraction form
    1,297.06/1,945.14 = 719.50/x
  3. Step 3: Cross multiply
    1,297.06x = 1,945.14 × 719.50
  4. Step 4: Simplify right side
    1,297.06x = 1,399,528.23
  5. Step 5: Solve for x
    x = 1,399,528.23/1,297.06
  6. Step 6: Final answer
    x = 1,079.00

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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.