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Finding the Fourth Proportional to 1,300.57, 1,794.79 and 711.11

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Solution

The fourth proportional to 1,300.57, 1,794.79 and 711.11 is: 981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300.57 : 1,794.79 = 711.11 : x
  2. Step 2: Convert to fraction form
    1,300.57/1,794.79 = 711.11/x
  3. Step 3: Cross multiply
    1,300.57x = 1,794.79 × 711.11
  4. Step 4: Simplify right side
    1,300.57x = 1,276,282.87
  5. Step 5: Solve for x
    x = 1,276,282.87/1,300.57
  6. Step 6: Final answer
    x = 981.33

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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.