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Finding the Fourth Proportional to 535.68, 739.08 and 328.68

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Solution

The fourth proportional to 535.68, 739.08 and 328.68 is: 453.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.68 : 739.08 = 328.68 : x
  2. Step 2: Convert to fraction form
    535.68/739.08 = 328.68/x
  3. Step 3: Cross multiply
    535.68x = 739.08 × 328.68
  4. Step 4: Simplify right side
    535.68x = 242,920.81
  5. Step 5: Solve for x
    x = 242,920.81/535.68
  6. Step 6: Final answer
    x = 453.48

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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.