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Finding the Fourth Proportional to 933.35, 1,288.94 and 845.87

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Solution

The fourth proportional to 933.35, 1,288.94 and 845.87 is: 1,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.35 : 1,288.94 = 845.87 : x
  2. Step 2: Convert to fraction form
    933.35/1,288.94 = 845.87/x
  3. Step 3: Cross multiply
    933.35x = 1,288.94 × 845.87
  4. Step 4: Simplify right side
    933.35x = 1,090,275.68
  5. Step 5: Solve for x
    x = 1,090,275.68/933.35
  6. Step 6: Final answer
    x = 1,168.13

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1.5x scale

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.