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Finding the Fourth Proportional to 1,110.80, 1,533.06 and 668.94

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Solution

The fourth proportional to 1,110.80, 1,533.06 and 668.94 is: 923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.80 : 1,533.06 = 668.94 : x
  2. Step 2: Convert to fraction form
    1,110.80/1,533.06 = 668.94/x
  3. Step 3: Cross multiply
    1,110.80x = 1,533.06 × 668.94
  4. Step 4: Simplify right side
    1,110.80x = 1,025,525.16
  5. Step 5: Solve for x
    x = 1,025,525.16/1,110.80
  6. Step 6: Final answer
    x = 923.24

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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.