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Finding the Fourth Proportional to 1,546.78, 2,317.08 and 930.15

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Solution

The fourth proportional to 1,546.78, 2,317.08 and 930.15 is: 1,393.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,546.78 : 2,317.08 = 930.15 : x
  2. Step 2: Convert to fraction form
    1,546.78/2,317.08 = 930.15/x
  3. Step 3: Cross multiply
    1,546.78x = 2,317.08 × 930.15
  4. Step 4: Simplify right side
    1,546.78x = 2,155,231.96
  5. Step 5: Solve for x
    x = 2,155,231.96/1,546.78
  6. Step 6: Final answer
    x = 1,393.37

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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.