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Finding the Fourth Proportional to 945.92, 1,303.60 and 683.48

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Solution

The fourth proportional to 945.92, 1,303.60 and 683.48 is: 941.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.92 : 1,303.60 = 683.48 : x
  2. Step 2: Convert to fraction form
    945.92/1,303.60 = 683.48/x
  3. Step 3: Cross multiply
    945.92x = 1,303.60 × 683.48
  4. Step 4: Simplify right side
    945.92x = 890,984.53
  5. Step 5: Solve for x
    x = 890,984.53/945.92
  6. Step 6: Final answer
    x = 941.92

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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.