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Finding the Fourth Proportional to 155.66, 233.62 and 74.52

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Solution

The fourth proportional to 155.66, 233.62 and 74.52 is: 111.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.66 : 233.62 = 74.52 : x
  2. Step 2: Convert to fraction form
    155.66/233.62 = 74.52/x
  3. Step 3: Cross multiply
    155.66x = 233.62 × 74.52
  4. Step 4: Simplify right side
    155.66x = 17,409.18
  5. Step 5: Solve for x
    x = 17,409.18/155.66
  6. Step 6: Final answer
    x = 111.84

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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.