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Finding the Fourth Proportional to 960.93, 1,326.38 and 930.15

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Solution

The fourth proportional to 960.93, 1,326.38 and 930.15 is: 1,283.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.93 : 1,326.38 = 930.15 : x
  2. Step 2: Convert to fraction form
    960.93/1,326.38 = 930.15/x
  3. Step 3: Cross multiply
    960.93x = 1,326.38 × 930.15
  4. Step 4: Simplify right side
    960.93x = 1,233,727.71
  5. Step 5: Solve for x
    x = 1,233,727.71/960.93
  6. Step 6: Final answer
    x = 1,283.89

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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.