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Finding the Fourth Proportional to 755.10, 1,041.70 and 460.35

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Solution

The fourth proportional to 755.10, 1,041.70 and 460.35 is: 635.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.10 : 1,041.70 = 460.35 : x
  2. Step 2: Convert to fraction form
    755.10/1,041.70 = 460.35/x
  3. Step 3: Cross multiply
    755.10x = 1,041.70 × 460.35
  4. Step 4: Simplify right side
    755.10x = 479,546.60
  5. Step 5: Solve for x
    x = 479,546.60/755.10
  6. Step 6: Final answer
    x = 635.08

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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.