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Finding the Fourth Proportional to 1,295.65, 1,941.86 and 1,020.66

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Solution

The fourth proportional to 1,295.65, 1,941.86 and 1,020.66 is: 1,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.65 : 1,941.86 = 1,020.66 : x
  2. Step 2: Convert to fraction form
    1,295.65/1,941.86 = 1,020.66/x
  3. Step 3: Cross multiply
    1,295.65x = 1,941.86 × 1,020.66
  4. Step 4: Simplify right side
    1,295.65x = 1,981,964.02
  5. Step 5: Solve for x
    x = 1,981,964.02/1,295.65
  6. Step 6: Final answer
    x = 1,529.71

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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.