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Finding the Fourth Proportional to 755.34, 1,042.38 and 444.84

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Solution

The fourth proportional to 755.34, 1,042.38 and 444.84 is: 613.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.34 : 1,042.38 = 444.84 : x
  2. Step 2: Convert to fraction form
    755.34/1,042.38 = 444.84/x
  3. Step 3: Cross multiply
    755.34x = 1,042.38 × 444.84
  4. Step 4: Simplify right side
    755.34x = 463,692.32
  5. Step 5: Solve for x
    x = 463,692.32/755.34
  6. Step 6: Final answer
    x = 613.89

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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.