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Finding the Fourth Proportional to 186.10, 256.94 and 170.50

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Solution

The fourth proportional to 186.10, 256.94 and 170.50 is: 235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.10 : 256.94 = 170.50 : x
  2. Step 2: Convert to fraction form
    186.10/256.94 = 170.50/x
  3. Step 3: Cross multiply
    186.10x = 256.94 × 170.50
  4. Step 4: Simplify right side
    186.10x = 43,808.05
  5. Step 5: Solve for x
    x = 43,808.05/186.10
  6. Step 6: Final answer
    x = 235.40

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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.