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Finding the Fourth Proportional to 934.30, 1,279.23 and 934.30

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Solution

The fourth proportional to 934.30, 1,279.23 and 934.30 is: 1,279.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.30 : 1,279.23 = 934.30 : x
  2. Step 2: Convert to fraction form
    934.30/1,279.23 = 934.30/x
  3. Step 3: Cross multiply
    934.30x = 1,279.23 × 934.30
  4. Step 4: Simplify right side
    934.30x = 1,195,184.59
  5. Step 5: Solve for x
    x = 1,195,184.59/934.30
  6. Step 6: Final answer
    x = 1,279.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.