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Finding the Fourth Proportional to 1,045.77, 1,568.56 and 634.80

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Solution

The fourth proportional to 1,045.77, 1,568.56 and 634.80 is: 952.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.77 : 1,568.56 = 634.80 : x
  2. Step 2: Convert to fraction form
    1,045.77/1,568.56 = 634.80/x
  3. Step 3: Cross multiply
    1,045.77x = 1,568.56 × 634.80
  4. Step 4: Simplify right side
    1,045.77x = 995,721.89
  5. Step 5: Solve for x
    x = 995,721.89/1,045.77
  6. Step 6: Final answer
    x = 952.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.