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Finding the Fourth Proportional to 541.05, 746.60 and 319.95

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Solution

The fourth proportional to 541.05, 746.60 and 319.95 is: 441.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.05 : 746.60 = 319.95 : x
  2. Step 2: Convert to fraction form
    541.05/746.60 = 319.95/x
  3. Step 3: Cross multiply
    541.05x = 746.60 × 319.95
  4. Step 4: Simplify right side
    541.05x = 238,874.67
  5. Step 5: Solve for x
    x = 238,874.67/541.05
  6. Step 6: Final answer
    x = 441.50

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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.