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Finding the Fourth Proportional to 265.95, 366.95 and 155.45

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Solution

The fourth proportional to 265.95, 366.95 and 155.45 is: 214.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.95 : 366.95 = 155.45 : x
  2. Step 2: Convert to fraction form
    265.95/366.95 = 155.45/x
  3. Step 3: Cross multiply
    265.95x = 366.95 × 155.45
  4. Step 4: Simplify right side
    265.95x = 57,039.77
  5. Step 5: Solve for x
    x = 57,039.77/265.95
  6. Step 6: Final answer
    x = 214.48

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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.