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Finding the Fourth Proportional to 1,300.35, 1,794.45 and 710.85

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Solution

The fourth proportional to 1,300.35, 1,794.45 and 710.85 is: 980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300.35 : 1,794.45 = 710.85 : x
  2. Step 2: Convert to fraction form
    1,300.35/1,794.45 = 710.85/x
  3. Step 3: Cross multiply
    1,300.35x = 1,794.45 × 710.85
  4. Step 4: Simplify right side
    1,300.35x = 1,275,584.78
  5. Step 5: Solve for x
    x = 1,275,584.78/1,300.35
  6. Step 6: Final answer
    x = 980.95

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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.