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Finding the Fourth Proportional to 230.01, 317.30 and 155.36

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Solution

The fourth proportional to 230.01, 317.30 and 155.36 is: 214.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.01 : 317.30 = 155.36 : x
  2. Step 2: Convert to fraction form
    230.01/317.30 = 155.36/x
  3. Step 3: Cross multiply
    230.01x = 317.30 × 155.36
  4. Step 4: Simplify right side
    230.01x = 49,293.36
  5. Step 5: Solve for x
    x = 49,293.36/230.01
  6. Step 6: Final answer
    x = 214.31

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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.