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Finding the Fourth Proportional to 255.88, 384.36 and 158.62

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Solution

The fourth proportional to 255.88, 384.36 and 158.62 is: 238.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.88 : 384.36 = 158.62 : x
  2. Step 2: Convert to fraction form
    255.88/384.36 = 158.62/x
  3. Step 3: Cross multiply
    255.88x = 384.36 × 158.62
  4. Step 4: Simplify right side
    255.88x = 60,967.18
  5. Step 5: Solve for x
    x = 60,967.18/255.88
  6. Step 6: Final answer
    x = 238.26

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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.