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Finding the Fourth Proportional to 755.55, 1,042.71 and 460.84

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Solution

The fourth proportional to 755.55, 1,042.71 and 460.84 is: 635.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.55 : 1,042.71 = 460.84 : x
  2. Step 2: Convert to fraction form
    755.55/1,042.71 = 460.84/x
  3. Step 3: Cross multiply
    755.55x = 1,042.71 × 460.84
  4. Step 4: Simplify right side
    755.55x = 480,522.48
  5. Step 5: Solve for x
    x = 480,522.48/755.55
  6. Step 6: Final answer
    x = 635.99

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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.