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Finding the Fourth Proportional to 484.07, 667.76 and 318.06

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Solution

The fourth proportional to 484.07, 667.76 and 318.06 is: 438.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.07 : 667.76 = 318.06 : x
  2. Step 2: Convert to fraction form
    484.07/667.76 = 318.06/x
  3. Step 3: Cross multiply
    484.07x = 667.76 × 318.06
  4. Step 4: Simplify right side
    484.07x = 212,386.16
  5. Step 5: Solve for x
    x = 212,386.16/484.07
  6. Step 6: Final answer
    x = 438.76

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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.