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Finding the Fourth Proportional to 356.89, 534.81 and 158.99

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Solution

The fourth proportional to 356.89, 534.81 and 158.99 is: 238.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.89 : 534.81 = 158.99 : x
  2. Step 2: Convert to fraction form
    356.89/534.81 = 158.99/x
  3. Step 3: Cross multiply
    356.89x = 534.81 × 158.99
  4. Step 4: Simplify right side
    356.89x = 85,029.44
  5. Step 5: Solve for x
    x = 85,029.44/356.89
  6. Step 6: Final answer
    x = 238.25

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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.