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Finding the Fourth Proportional to 155.57, 235.05 and 154.08

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Solution

The fourth proportional to 155.57, 235.05 and 154.08 is: 232.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.57 : 235.05 = 154.08 : x
  2. Step 2: Convert to fraction form
    155.57/235.05 = 154.08/x
  3. Step 3: Cross multiply
    155.57x = 235.05 × 154.08
  4. Step 4: Simplify right side
    155.57x = 36,216.50
  5. Step 5: Solve for x
    x = 36,216.50/155.57
  6. Step 6: Final answer
    x = 232.81

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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.