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Finding the Fourth Proportional to 330.59, 453.32 and 319.01

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Solution

The fourth proportional to 330.59, 453.32 and 319.01 is: 437.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.59 : 453.32 = 319.01 : x
  2. Step 2: Convert to fraction form
    330.59/453.32 = 319.01/x
  3. Step 3: Cross multiply
    330.59x = 453.32 × 319.01
  4. Step 4: Simplify right side
    330.59x = 144,610.95
  5. Step 5: Solve for x
    x = 144,610.95/330.59
  6. Step 6: Final answer
    x = 437.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.