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Finding the Fourth Proportional to 1,048.74, 1,447.20 and 606.70

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Solution

The fourth proportional to 1,048.74, 1,447.20 and 606.70 is: 837.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.74 : 1,447.20 = 606.70 : x
  2. Step 2: Convert to fraction form
    1,048.74/1,447.20 = 606.70/x
  3. Step 3: Cross multiply
    1,048.74x = 1,447.20 × 606.70
  4. Step 4: Simplify right side
    1,048.74x = 878,016.24
  5. Step 5: Solve for x
    x = 878,016.24/1,048.74
  6. Step 6: Final answer
    x = 837.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.