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Finding the Fourth Proportional to 1,059.66, 1,462.23 and 839.16

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Solution

The fourth proportional to 1,059.66, 1,462.23 and 839.16 is: 1,157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.66 : 1,462.23 = 839.16 : x
  2. Step 2: Convert to fraction form
    1,059.66/1,462.23 = 839.16/x
  3. Step 3: Cross multiply
    1,059.66x = 1,462.23 × 839.16
  4. Step 4: Simplify right side
    1,059.66x = 1,227,044.93
  5. Step 5: Solve for x
    x = 1,227,044.93/1,059.66
  6. Step 6: Final answer
    x = 1,157.96

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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.