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Finding the Fourth Proportional to 1,454.15, 2,006.73 and 856.66

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Solution

The fourth proportional to 1,454.15, 2,006.73 and 856.66 is: 1,182.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.15 : 2,006.73 = 856.66 : x
  2. Step 2: Convert to fraction form
    1,454.15/2,006.73 = 856.66/x
  3. Step 3: Cross multiply
    1,454.15x = 2,006.73 × 856.66
  4. Step 4: Simplify right side
    1,454.15x = 1,719,085.32
  5. Step 5: Solve for x
    x = 1,719,085.32/1,454.15
  6. Step 6: Final answer
    x = 1,182.20

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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.