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Finding the Fourth Proportional to 1,341.55, 1,850.93 and 869.46

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Solution

The fourth proportional to 1,341.55, 1,850.93 and 869.46 is: 1,199.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.55 : 1,850.93 = 869.46 : x
  2. Step 2: Convert to fraction form
    1,341.55/1,850.93 = 869.46/x
  3. Step 3: Cross multiply
    1,341.55x = 1,850.93 × 869.46
  4. Step 4: Simplify right side
    1,341.55x = 1,609,309.60
  5. Step 5: Solve for x
    x = 1,609,309.60/1,341.55
  6. Step 6: Final answer
    x = 1,199.59

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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.