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Finding the Fourth Proportional to 1,010.83, 1,395.49 and 612.56

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Solution

The fourth proportional to 1,010.83, 1,395.49 and 612.56 is: 845.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.83 : 1,395.49 = 612.56 : x
  2. Step 2: Convert to fraction form
    1,010.83/1,395.49 = 612.56/x
  3. Step 3: Cross multiply
    1,010.83x = 1,395.49 × 612.56
  4. Step 4: Simplify right side
    1,010.83x = 854,821.35
  5. Step 5: Solve for x
    x = 854,821.35/1,010.83
  6. Step 6: Final answer
    x = 845.66

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1.5x scale

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.