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Finding the Fourth Proportional to 1,110.25, 1,532.06 and 612.89

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Solution

The fourth proportional to 1,110.25, 1,532.06 and 612.89 is: 845.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.25 : 1,532.06 = 612.89 : x
  2. Step 2: Convert to fraction form
    1,110.25/1,532.06 = 612.89/x
  3. Step 3: Cross multiply
    1,110.25x = 1,532.06 × 612.89
  4. Step 4: Simplify right side
    1,110.25x = 938,983.87
  5. Step 5: Solve for x
    x = 938,983.87/1,110.25
  6. Step 6: Final answer
    x = 845.74

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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.