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Finding the Fourth Proportional to 1,506.77, 2,258.94 and 856.61

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Solution

The fourth proportional to 1,506.77, 2,258.94 and 856.61 is: 1,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,506.77 : 2,258.94 = 856.61 : x
  2. Step 2: Convert to fraction form
    1,506.77/2,258.94 = 856.61/x
  3. Step 3: Cross multiply
    1,506.77x = 2,258.94 × 856.61
  4. Step 4: Simplify right side
    1,506.77x = 1,935,020.66
  5. Step 5: Solve for x
    x = 1,935,020.66/1,506.77
  6. Step 6: Final answer
    x = 1,284.22

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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.