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Finding the Fourth Proportional to 933.64, 1,288.04 and 535.08

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Solution

The fourth proportional to 933.64, 1,288.04 and 535.08 is: 738.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.64 : 1,288.04 = 535.08 : x
  2. Step 2: Convert to fraction form
    933.64/1,288.04 = 535.08/x
  3. Step 3: Cross multiply
    933.64x = 1,288.04 × 535.08
  4. Step 4: Simplify right side
    933.64x = 689,195.33
  5. Step 5: Solve for x
    x = 689,195.33/933.64
  6. Step 6: Final answer
    x = 738.18

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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.