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Finding the Fourth Proportional to 1,048.80, 1,448.64 and 883.56

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Solution

The fourth proportional to 1,048.80, 1,448.64 and 883.56 is: 1,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.80 : 1,448.64 = 883.56 : x
  2. Step 2: Convert to fraction form
    1,048.80/1,448.64 = 883.56/x
  3. Step 3: Cross multiply
    1,048.80x = 1,448.64 × 883.56
  4. Step 4: Simplify right side
    1,048.80x = 1,279,960.36
  5. Step 5: Solve for x
    x = 1,279,960.36/1,048.80
  6. Step 6: Final answer
    x = 1,220.40

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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.