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Finding the Fourth Proportional to 356.85, 534.86 and 164.07

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Solution

The fourth proportional to 356.85, 534.86 and 164.07 is: 245.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.85 : 534.86 = 164.07 : x
  2. Step 2: Convert to fraction form
    356.85/534.86 = 164.07/x
  3. Step 3: Cross multiply
    356.85x = 534.86 × 164.07
  4. Step 4: Simplify right side
    356.85x = 87,750.99
  5. Step 5: Solve for x
    x = 87,750.99/356.85
  6. Step 6: Final answer
    x = 245.91

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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.