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Finding the Fourth Proportional to 1,652.82, 2,280.90 and 906.78

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Solution

The fourth proportional to 1,652.82, 2,280.90 and 906.78 is: 1,251.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,652.82 : 2,280.90 = 906.78 : x
  2. Step 2: Convert to fraction form
    1,652.82/2,280.90 = 906.78/x
  3. Step 3: Cross multiply
    1,652.82x = 2,280.90 × 906.78
  4. Step 4: Simplify right side
    1,652.82x = 2,068,274.50
  5. Step 5: Solve for x
    x = 2,068,274.50/1,652.82
  6. Step 6: Final answer
    x = 1,251.36

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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.