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Finding the Fourth Proportional to 1,520.81, 2,283.81 and 908.31

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Solution

The fourth proportional to 1,520.81, 2,283.81 and 908.31 is: 1,364.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.81 : 2,283.81 = 908.31 : x
  2. Step 2: Convert to fraction form
    1,520.81/2,283.81 = 908.31/x
  3. Step 3: Cross multiply
    1,520.81x = 2,283.81 × 908.31
  4. Step 4: Simplify right side
    1,520.81x = 2,074,402.92
  5. Step 5: Solve for x
    x = 2,074,402.92/1,520.81
  6. Step 6: Final answer
    x = 1,364.02

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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.