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Finding the Fourth Proportional to 186.00, 256.92 and 155.01

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Solution

The fourth proportional to 186.00, 256.92 and 155.01 is: 214.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.00 : 256.92 = 155.01 : x
  2. Step 2: Convert to fraction form
    186.00/256.92 = 155.01/x
  3. Step 3: Cross multiply
    186.00x = 256.92 × 155.01
  4. Step 4: Simplify right side
    186.00x = 39,826.42
  5. Step 5: Solve for x
    x = 39,826.42/186.00
  6. Step 6: Final answer
    x = 214.12

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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.