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Finding the Fourth Proportional to 155.66, 233.49 and 90.62

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Solution

The fourth proportional to 155.66, 233.49 and 90.62 is: 135.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.66 : 233.49 = 90.62 : x
  2. Step 2: Convert to fraction form
    155.66/233.49 = 90.62/x
  3. Step 3: Cross multiply
    155.66x = 233.49 × 90.62
  4. Step 4: Simplify right side
    155.66x = 21,157.70
  5. Step 5: Solve for x
    x = 21,157.70/155.66
  6. Step 6: Final answer
    x = 135.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.