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Finding the Fourth Proportional to 487.35, 667.51 and 484.11

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Solution

The fourth proportional to 487.35, 667.51 and 484.11 is: 663.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.35 : 667.51 = 484.11 : x
  2. Step 2: Convert to fraction form
    487.35/667.51 = 484.11/x
  3. Step 3: Cross multiply
    487.35x = 667.51 × 484.11
  4. Step 4: Simplify right side
    487.35x = 323,147.06
  5. Step 5: Solve for x
    x = 323,147.06/487.35
  6. Step 6: Final answer
    x = 663.07

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.