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Finding the Fourth Proportional to 893.92, 1,340.88 and 460.48

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Solution

The fourth proportional to 893.92, 1,340.88 and 460.48 is: 690.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.92 : 1,340.88 = 460.48 : x
  2. Step 2: Convert to fraction form
    893.92/1,340.88 = 460.48/x
  3. Step 3: Cross multiply
    893.92x = 1,340.88 × 460.48
  4. Step 4: Simplify right side
    893.92x = 617,448.42
  5. Step 5: Solve for x
    x = 617,448.42/893.92
  6. Step 6: Final answer
    x = 690.72

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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.