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Finding the Fourth Proportional to 1,566.66, 2,350.40 and 786.63

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Solution

The fourth proportional to 1,566.66, 2,350.40 and 786.63 is: 1,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.66 : 2,350.40 = 786.63 : x
  2. Step 2: Convert to fraction form
    1,566.66/2,350.40 = 786.63/x
  3. Step 3: Cross multiply
    1,566.66x = 2,350.40 × 786.63
  4. Step 4: Simplify right side
    1,566.66x = 1,848,895.15
  5. Step 5: Solve for x
    x = 1,848,895.15/1,566.66
  6. Step 6: Final answer
    x = 1,180.15

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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.