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Finding the Fourth Proportional to 945.34, 1,304.49 and 695.86

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Solution

The fourth proportional to 945.34, 1,304.49 and 695.86 is: 960.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.34 : 1,304.49 = 695.86 : x
  2. Step 2: Convert to fraction form
    945.34/1,304.49 = 695.86/x
  3. Step 3: Cross multiply
    945.34x = 1,304.49 × 695.86
  4. Step 4: Simplify right side
    945.34x = 907,742.41
  5. Step 5: Solve for x
    x = 907,742.41/945.34
  6. Step 6: Final answer
    x = 960.23

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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.