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Finding the Fourth Proportional to 155.94, 235 and 146.82

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Solution

The fourth proportional to 155.94, 235 and 146.82 is: 221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.94 : 235 = 146.82 : x
  2. Step 2: Convert to fraction form
    155.94/235 = 146.82/x
  3. Step 3: Cross multiply
    155.94x = 235 × 146.82
  4. Step 4: Simplify right side
    155.94x = 34,502.70
  5. Step 5: Solve for x
    x = 34,502.70/155.94
  6. Step 6: Final answer
    x = 221.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.