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Finding the Fourth Proportional to 1,293.46, 1,939.02 and 471.15

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Solution

The fourth proportional to 1,293.46, 1,939.02 and 471.15 is: 706.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.46 : 1,939.02 = 471.15 : x
  2. Step 2: Convert to fraction form
    1,293.46/1,939.02 = 471.15/x
  3. Step 3: Cross multiply
    1,293.46x = 1,939.02 × 471.15
  4. Step 4: Simplify right side
    1,293.46x = 913,569.27
  5. Step 5: Solve for x
    x = 913,569.27/1,293.46
  6. Step 6: Final answer
    x = 706.30

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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.