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Finding the Fourth Proportional to 762.09, 1,052.21 and 575.97

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Solution

The fourth proportional to 762.09, 1,052.21 and 575.97 is: 795.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.09 : 1,052.21 = 575.97 : x
  2. Step 2: Convert to fraction form
    762.09/1,052.21 = 575.97/x
  3. Step 3: Cross multiply
    762.09x = 1,052.21 × 575.97
  4. Step 4: Simplify right side
    762.09x = 606,038.51
  5. Step 5: Solve for x
    x = 606,038.51/762.09
  6. Step 6: Final answer
    x = 795.23

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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.