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Finding the Fourth Proportional to 935.94, 1,288.80 and 738.84

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Solution

The fourth proportional to 935.94, 1,288.80 and 738.84 is: 1,017.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.94 : 1,288.80 = 738.84 : x
  2. Step 2: Convert to fraction form
    935.94/1,288.80 = 738.84/x
  3. Step 3: Cross multiply
    935.94x = 1,288.80 × 738.84
  4. Step 4: Simplify right side
    935.94x = 952,216.99
  5. Step 5: Solve for x
    x = 952,216.99/935.94
  6. Step 6: Final answer
    x = 1,017.39

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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.