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Finding the Fourth Proportional to 494.86, 747.91 and 486.36

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Solution

The fourth proportional to 494.86, 747.91 and 486.36 is: 735.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.86 : 747.91 = 486.36 : x
  2. Step 2: Convert to fraction form
    494.86/747.91 = 486.36/x
  3. Step 3: Cross multiply
    494.86x = 747.91 × 486.36
  4. Step 4: Simplify right side
    494.86x = 363,753.51
  5. Step 5: Solve for x
    x = 363,753.51/494.86
  6. Step 6: Final answer
    x = 735.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.