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Finding the Fourth Proportional to 964.19, 1,326.33 and 785.59

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Solution

The fourth proportional to 964.19, 1,326.33 and 785.59 is: 1,080.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.19 : 1,326.33 = 785.59 : x
  2. Step 2: Convert to fraction form
    964.19/1,326.33 = 785.59/x
  3. Step 3: Cross multiply
    964.19x = 1,326.33 × 785.59
  4. Step 4: Simplify right side
    964.19x = 1,041,951.58
  5. Step 5: Solve for x
    x = 1,041,951.58/964.19
  6. Step 6: Final answer
    x = 1,080.65

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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.