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Finding the Fourth Proportional to 943.34, 1,301.73 and 693.86

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Solution

The fourth proportional to 943.34, 1,301.73 and 693.86 is: 957.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.34 : 1,301.73 = 693.86 : x
  2. Step 2: Convert to fraction form
    943.34/1,301.73 = 693.86/x
  3. Step 3: Cross multiply
    943.34x = 1,301.73 × 693.86
  4. Step 4: Simplify right side
    943.34x = 903,218.38
  5. Step 5: Solve for x
    x = 903,218.38/943.34
  6. Step 6: Final answer
    x = 957.47

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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.