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Finding the Fourth Proportional to 1,001.06, 1,381.39 and 558.94

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Solution

The fourth proportional to 1,001.06, 1,381.39 and 558.94 is: 771.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.06 : 1,381.39 = 558.94 : x
  2. Step 2: Convert to fraction form
    1,001.06/1,381.39 = 558.94/x
  3. Step 3: Cross multiply
    1,001.06x = 1,381.39 × 558.94
  4. Step 4: Simplify right side
    1,001.06x = 772,104.42
  5. Step 5: Solve for x
    x = 772,104.42/1,001.06
  6. Step 6: Final answer
    x = 771.29

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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.