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Finding the Fourth Proportional to 904.83, 1,357.25 and 220.83

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Solution

The fourth proportional to 904.83, 1,357.25 and 220.83 is: 331.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.83 : 1,357.25 = 220.83 : x
  2. Step 2: Convert to fraction form
    904.83/1,357.25 = 220.83/x
  3. Step 3: Cross multiply
    904.83x = 1,357.25 × 220.83
  4. Step 4: Simplify right side
    904.83x = 299,717.87
  5. Step 5: Solve for x
    x = 299,717.87/904.83
  6. Step 6: Final answer
    x = 331.24

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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.