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Finding the Fourth Proportional to 933.87, 1,288.58 and 540.82

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Solution

The fourth proportional to 933.87, 1,288.58 and 540.82 is: 746.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.87 : 1,288.58 = 540.82 : x
  2. Step 2: Convert to fraction form
    933.87/1,288.58 = 540.82/x
  3. Step 3: Cross multiply
    933.87x = 1,288.58 × 540.82
  4. Step 4: Simplify right side
    933.87x = 696,887.13
  5. Step 5: Solve for x
    x = 696,887.13/933.87
  6. Step 6: Final answer
    x = 746.24

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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.