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Finding the Fourth Proportional to 320.34, 441.93 and 187.56

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Solution

The fourth proportional to 320.34, 441.93 and 187.56 is: 258.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.34 : 441.93 = 187.56 : x
  2. Step 2: Convert to fraction form
    320.34/441.93 = 187.56/x
  3. Step 3: Cross multiply
    320.34x = 441.93 × 187.56
  4. Step 4: Simplify right side
    320.34x = 82,888.39
  5. Step 5: Solve for x
    x = 82,888.39/320.34
  6. Step 6: Final answer
    x = 258.75

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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.