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Finding the Fourth Proportional to 491.06, 736.86 and 454.34

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Solution

The fourth proportional to 491.06, 736.86 and 454.34 is: 681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.06 : 736.86 = 454.34 : x
  2. Step 2: Convert to fraction form
    491.06/736.86 = 454.34/x
  3. Step 3: Cross multiply
    491.06x = 736.86 × 454.34
  4. Step 4: Simplify right side
    491.06x = 334,784.97
  5. Step 5: Solve for x
    x = 334,784.97/491.06
  6. Step 6: Final answer
    x = 681.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.