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Finding the Fourth Proportional to 904.96, 1,357.52 and 442.96

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Solution

The fourth proportional to 904.96, 1,357.52 and 442.96 is: 664.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.96 : 1,357.52 = 442.96 : x
  2. Step 2: Convert to fraction form
    904.96/1,357.52 = 442.96/x
  3. Step 3: Cross multiply
    904.96x = 1,357.52 × 442.96
  4. Step 4: Simplify right side
    904.96x = 601,327.06
  5. Step 5: Solve for x
    x = 601,327.06/904.96
  6. Step 6: Final answer
    x = 664.48

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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.