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Finding the Fourth Proportional to 735.30, 1,013.81 and 486.18

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Solution

The fourth proportional to 735.30, 1,013.81 and 486.18 is: 670.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.30 : 1,013.81 = 486.18 : x
  2. Step 2: Convert to fraction form
    735.30/1,013.81 = 486.18/x
  3. Step 3: Cross multiply
    735.30x = 1,013.81 × 486.18
  4. Step 4: Simplify right side
    735.30x = 492,891.71
  5. Step 5: Solve for x
    x = 492,891.71/735.30
  6. Step 6: Final answer
    x = 670.33

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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.