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Finding the Fourth Proportional to 533.58, 736.42 and 386.70

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Solution

The fourth proportional to 533.58, 736.42 and 386.70 is: 533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.58 : 736.42 = 386.70 : x
  2. Step 2: Convert to fraction form
    533.58/736.42 = 386.70/x
  3. Step 3: Cross multiply
    533.58x = 736.42 × 386.70
  4. Step 4: Simplify right side
    533.58x = 284,773.61
  5. Step 5: Solve for x
    x = 284,773.61/533.58
  6. Step 6: Final answer
    x = 533.70

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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.