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Finding the Fourth Proportional to 922.32, 1,383.21 and 306.18

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Solution

The fourth proportional to 922.32, 1,383.21 and 306.18 is: 459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.32 : 1,383.21 = 306.18 : x
  2. Step 2: Convert to fraction form
    922.32/1,383.21 = 306.18/x
  3. Step 3: Cross multiply
    922.32x = 1,383.21 × 306.18
  4. Step 4: Simplify right side
    922.32x = 423,511.24
  5. Step 5: Solve for x
    x = 423,511.24/922.32
  6. Step 6: Final answer
    x = 459.18

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Double scale
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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.