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Finding the Fourth Proportional to 904.37, 1,245.38 and 883.91

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Solution

The fourth proportional to 904.37, 1,245.38 and 883.91 is: 1,217.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.37 : 1,245.38 = 883.91 : x
  2. Step 2: Convert to fraction form
    904.37/1,245.38 = 883.91/x
  3. Step 3: Cross multiply
    904.37x = 1,245.38 × 883.91
  4. Step 4: Simplify right side
    904.37x = 1,100,802.53
  5. Step 5: Solve for x
    x = 1,100,802.53/904.37
  6. Step 6: Final answer
    x = 1,217.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.