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Finding the Fourth Proportional to 852.99, 1,279.34 and 275.87

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Solution

The fourth proportional to 852.99, 1,279.34 and 275.87 is: 413.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.99 : 1,279.34 = 275.87 : x
  2. Step 2: Convert to fraction form
    852.99/1,279.34 = 275.87/x
  3. Step 3: Cross multiply
    852.99x = 1,279.34 × 275.87
  4. Step 4: Simplify right side
    852.99x = 352,931.53
  5. Step 5: Solve for x
    x = 352,931.53/852.99
  6. Step 6: Final answer
    x = 413.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.