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Finding the Fourth Proportional to 1,614.99, 2,228.51 and 906.69

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Solution

The fourth proportional to 1,614.99, 2,228.51 and 906.69 is: 1,251.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614.99 : 2,228.51 = 906.69 : x
  2. Step 2: Convert to fraction form
    1,614.99/2,228.51 = 906.69/x
  3. Step 3: Cross multiply
    1,614.99x = 2,228.51 × 906.69
  4. Step 4: Simplify right side
    1,614.99x = 2,020,567.73
  5. Step 5: Solve for x
    x = 2,020,567.73/1,614.99
  6. Step 6: Final answer
    x = 1,251.13

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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.