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Finding the Fourth Proportional to 933.95, 1,288.87 and 560.97

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Solution

The fourth proportional to 933.95, 1,288.87 and 560.97 is: 774.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.95 : 1,288.87 = 560.97 : x
  2. Step 2: Convert to fraction form
    933.95/1,288.87 = 560.97/x
  3. Step 3: Cross multiply
    933.95x = 1,288.87 × 560.97
  4. Step 4: Simplify right side
    933.95x = 723,016.00
  5. Step 5: Solve for x
    x = 723,016.00/933.95
  6. Step 6: Final answer
    x = 774.15

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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.