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Finding the Fourth Proportional to 230.37, 317.87 and 147.55

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Solution

The fourth proportional to 230.37, 317.87 and 147.55 is: 203.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.37 : 317.87 = 147.55 : x
  2. Step 2: Convert to fraction form
    230.37/317.87 = 147.55/x
  3. Step 3: Cross multiply
    230.37x = 317.87 × 147.55
  4. Step 4: Simplify right side
    230.37x = 46,901.72
  5. Step 5: Solve for x
    x = 46,901.72/230.37
  6. Step 6: Final answer
    x = 203.59

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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.