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Finding the Fourth Proportional to 656.32, 984.21 and 223.51

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Solution

The fourth proportional to 656.32, 984.21 and 223.51 is: 335.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.32 : 984.21 = 223.51 : x
  2. Step 2: Convert to fraction form
    656.32/984.21 = 223.51/x
  3. Step 3: Cross multiply
    656.32x = 984.21 × 223.51
  4. Step 4: Simplify right side
    656.32x = 219,980.78
  5. Step 5: Solve for x
    x = 219,980.78/656.32
  6. Step 6: Final answer
    x = 335.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.