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Finding the Fourth Proportional to 1,048.06, 1,443.03 and 890.38

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Solution

The fourth proportional to 1,048.06, 1,443.03 and 890.38 is: 1,225.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.06 : 1,443.03 = 890.38 : x
  2. Step 2: Convert to fraction form
    1,048.06/1,443.03 = 890.38/x
  3. Step 3: Cross multiply
    1,048.06x = 1,443.03 × 890.38
  4. Step 4: Simplify right side
    1,048.06x = 1,284,845.05
  5. Step 5: Solve for x
    x = 1,284,845.05/1,048.06
  6. Step 6: Final answer
    x = 1,225.93

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1.5x scale

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.