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Finding the Fourth Proportional to 1,052.77, 1,452.90 and 790.33

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Solution

The fourth proportional to 1,052.77, 1,452.90 and 790.33 is: 1,090.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.77 : 1,452.90 = 790.33 : x
  2. Step 2: Convert to fraction form
    1,052.77/1,452.90 = 790.33/x
  3. Step 3: Cross multiply
    1,052.77x = 1,452.90 × 790.33
  4. Step 4: Simplify right side
    1,052.77x = 1,148,270.46
  5. Step 5: Solve for x
    x = 1,148,270.46/1,052.77
  6. Step 6: Final answer
    x = 1,090.71

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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.