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Finding the Fourth Proportional to 155.04, 231.07 and 153.77

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Solution

The fourth proportional to 155.04, 231.07 and 153.77 is: 229.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.04 : 231.07 = 153.77 : x
  2. Step 2: Convert to fraction form
    155.04/231.07 = 153.77/x
  3. Step 3: Cross multiply
    155.04x = 231.07 × 153.77
  4. Step 4: Simplify right side
    155.04x = 35,531.63
  5. Step 5: Solve for x
    x = 35,531.63/155.04
  6. Step 6: Final answer
    x = 229.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.