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Finding the Fourth Proportional to 941.32, 1,419.43 and 917.32

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Solution

The fourth proportional to 941.32, 1,419.43 and 917.32 is: 1,383.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.32 : 1,419.43 = 917.32 : x
  2. Step 2: Convert to fraction form
    941.32/1,419.43 = 917.32/x
  3. Step 3: Cross multiply
    941.32x = 1,419.43 × 917.32
  4. Step 4: Simplify right side
    941.32x = 1,302,071.53
  5. Step 5: Solve for x
    x = 1,302,071.53/941.32
  6. Step 6: Final answer
    x = 1,383.24

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.