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Finding the Fourth Proportional to 536.31, 739.52 and 465.74

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Solution

The fourth proportional to 536.31, 739.52 and 465.74 is: 642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.31 : 739.52 = 465.74 : x
  2. Step 2: Convert to fraction form
    536.31/739.52 = 465.74/x
  3. Step 3: Cross multiply
    536.31x = 739.52 × 465.74
  4. Step 4: Simplify right side
    536.31x = 344,423.05
  5. Step 5: Solve for x
    x = 344,423.05/536.31
  6. Step 6: Final answer
    x = 642.21

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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.