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Finding the Fourth Proportional to 1,341.20, 1,850.80 and 751.64

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Solution

The fourth proportional to 1,341.20, 1,850.80 and 751.64 is: 1,037.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.20 : 1,850.80 = 751.64 : x
  2. Step 2: Convert to fraction form
    1,341.20/1,850.80 = 751.64/x
  3. Step 3: Cross multiply
    1,341.20x = 1,850.80 × 751.64
  4. Step 4: Simplify right side
    1,341.20x = 1,391,135.31
  5. Step 5: Solve for x
    x = 1,391,135.31/1,341.20
  6. Step 6: Final answer
    x = 1,037.23

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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.