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Finding the Fourth Proportional to 852.51, 1,177.62 and 668.32

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Solution

The fourth proportional to 852.51, 1,177.62 and 668.32 is: 923.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.51 : 1,177.62 = 668.32 : x
  2. Step 2: Convert to fraction form
    852.51/1,177.62 = 668.32/x
  3. Step 3: Cross multiply
    852.51x = 1,177.62 × 668.32
  4. Step 4: Simplify right side
    852.51x = 787,023.66
  5. Step 5: Solve for x
    x = 787,023.66/852.51
  6. Step 6: Final answer
    x = 923.19

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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.