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Finding the Fourth Proportional to 919.04, 1,378.52 and 235.04

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Solution

The fourth proportional to 919.04, 1,378.52 and 235.04 is: 352.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    919.04 : 1,378.52 = 235.04 : x
  2. Step 2: Convert to fraction form
    919.04/1,378.52 = 235.04/x
  3. Step 3: Cross multiply
    919.04x = 1,378.52 × 235.04
  4. Step 4: Simplify right side
    919.04x = 324,007.34
  5. Step 5: Solve for x
    x = 324,007.34/919.04
  6. Step 6: Final answer
    x = 352.55

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Double scale
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Similar ratio
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1.5x scale

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.