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Finding the Fourth Proportional to 540.63, 746.12 and 319.59

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Solution

The fourth proportional to 540.63, 746.12 and 319.59 is: 441.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.63 : 746.12 = 319.59 : x
  2. Step 2: Convert to fraction form
    540.63/746.12 = 319.59/x
  3. Step 3: Cross multiply
    540.63x = 746.12 × 319.59
  4. Step 4: Simplify right side
    540.63x = 238,453.29
  5. Step 5: Solve for x
    x = 238,453.29/540.63
  6. Step 6: Final answer
    x = 441.07

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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.