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Finding the Fourth Proportional to 1,373.30, 1,895.17 and 767.65

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Solution

The fourth proportional to 1,373.30, 1,895.17 and 767.65 is: 1,059.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.30 : 1,895.17 = 767.65 : x
  2. Step 2: Convert to fraction form
    1,373.30/1,895.17 = 767.65/x
  3. Step 3: Cross multiply
    1,373.30x = 1,895.17 × 767.65
  4. Step 4: Simplify right side
    1,373.30x = 1,454,813.94
  5. Step 5: Solve for x
    x = 1,454,813.94/1,373.30
  6. Step 6: Final answer
    x = 1,059.36

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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.