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Finding the Fourth Proportional to 1,546.66, 2,320.39 and 766.63

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Solution

The fourth proportional to 1,546.66, 2,320.39 and 766.63 is: 1,150.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,546.66 : 2,320.39 = 766.63 : x
  2. Step 2: Convert to fraction form
    1,546.66/2,320.39 = 766.63/x
  3. Step 3: Cross multiply
    1,546.66x = 2,320.39 × 766.63
  4. Step 4: Simplify right side
    1,546.66x = 1,778,867.07
  5. Step 5: Solve for x
    x = 1,778,867.07/1,546.66
  6. Step 6: Final answer
    x = 1,150.14

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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.