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Finding the Fourth Proportional to 382.68, 573.40 and 260.52

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Solution

The fourth proportional to 382.68, 573.40 and 260.52 is: 390.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.68 : 573.40 = 260.52 : x
  2. Step 2: Convert to fraction form
    382.68/573.40 = 260.52/x
  3. Step 3: Cross multiply
    382.68x = 573.40 × 260.52
  4. Step 4: Simplify right side
    382.68x = 149,382.17
  5. Step 5: Solve for x
    x = 149,382.17/382.68
  6. Step 6: Final answer
    x = 390.36

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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.