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Finding the Fourth Proportional to 867.36, 1,293.57 and 738.18

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Solution

The fourth proportional to 867.36, 1,293.57 and 738.18 is: 1,100.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.36 : 1,293.57 = 738.18 : x
  2. Step 2: Convert to fraction form
    867.36/1,293.57 = 738.18/x
  3. Step 3: Cross multiply
    867.36x = 1,293.57 × 738.18
  4. Step 4: Simplify right side
    867.36x = 954,887.50
  5. Step 5: Solve for x
    x = 954,887.50/867.36
  6. Step 6: Final answer
    x = 1,100.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.