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Finding the Fourth Proportional to 919.00, 1,378.72 and 502.33

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Solution

The fourth proportional to 919.00, 1,378.72 and 502.33 is: 753.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    919.00 : 1,378.72 = 502.33 : x
  2. Step 2: Convert to fraction form
    919.00/1,378.72 = 502.33/x
  3. Step 3: Cross multiply
    919.00x = 1,378.72 × 502.33
  4. Step 4: Simplify right side
    919.00x = 692,568.31
  5. Step 5: Solve for x
    x = 692,568.31/919.00
  6. Step 6: Final answer
    x = 753.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.