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Finding the Fourth Proportional to 351.99, 526.77 and 311.49

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Solution

The fourth proportional to 351.99, 526.77 and 311.49 is: 466.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.99 : 526.77 = 311.49 : x
  2. Step 2: Convert to fraction form
    351.99/526.77 = 311.49/x
  3. Step 3: Cross multiply
    351.99x = 526.77 × 311.49
  4. Step 4: Simplify right side
    351.99x = 164,083.59
  5. Step 5: Solve for x
    x = 164,083.59/351.99
  6. Step 6: Final answer
    x = 466.16

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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.