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Finding the Fourth Proportional to 454.12, 681.18 and 207.46

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Solution

The fourth proportional to 454.12, 681.18 and 207.46 is: 311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.12 : 681.18 = 207.46 : x
  2. Step 2: Convert to fraction form
    454.12/681.18 = 207.46/x
  3. Step 3: Cross multiply
    454.12x = 681.18 × 207.46
  4. Step 4: Simplify right side
    454.12x = 141,317.60
  5. Step 5: Solve for x
    x = 141,317.60/454.12
  6. Step 6: Final answer
    x = 311.19

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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.