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Finding the Fourth Proportional to 933.52, 1,288.14 and 540.54

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Solution

The fourth proportional to 933.52, 1,288.14 and 540.54 is: 745.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.52 : 1,288.14 = 540.54 : x
  2. Step 2: Convert to fraction form
    933.52/1,288.14 = 540.54/x
  3. Step 3: Cross multiply
    933.52x = 1,288.14 × 540.54
  4. Step 4: Simplify right side
    933.52x = 696,291.20
  5. Step 5: Solve for x
    x = 696,291.20/933.52
  6. Step 6: Final answer
    x = 745.88

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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.