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Finding the Fourth Proportional to 920.52, 1,380.35 and 335.11

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Solution

The fourth proportional to 920.52, 1,380.35 and 335.11 is: 502.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.52 : 1,380.35 = 335.11 : x
  2. Step 2: Convert to fraction form
    920.52/1,380.35 = 335.11/x
  3. Step 3: Cross multiply
    920.52x = 1,380.35 × 335.11
  4. Step 4: Simplify right side
    920.52x = 462,563.96
  5. Step 5: Solve for x
    x = 462,563.96/920.52
  6. Step 6: Final answer
    x = 502.50

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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.