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Finding the Fourth Proportional to 536.31, 739.51 and 389.02

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Solution

The fourth proportional to 536.31, 739.51 and 389.02 is: 536.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.31 : 739.51 = 389.02 : x
  2. Step 2: Convert to fraction form
    536.31/739.51 = 389.02/x
  3. Step 3: Cross multiply
    536.31x = 739.51 × 389.02
  4. Step 4: Simplify right side
    536.31x = 287,684.18
  5. Step 5: Solve for x
    x = 287,684.18/536.31
  6. Step 6: Final answer
    x = 536.41

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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.