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Finding the Fourth Proportional to 487.72, 673.03 and 266.68

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Solution

The fourth proportional to 487.72, 673.03 and 266.68 is: 368.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.72 : 673.03 = 266.68 : x
  2. Step 2: Convert to fraction form
    487.72/673.03 = 266.68/x
  3. Step 3: Cross multiply
    487.72x = 673.03 × 266.68
  4. Step 4: Simplify right side
    487.72x = 179,483.64
  5. Step 5: Solve for x
    x = 179,483.64/487.72
  6. Step 6: Final answer
    x = 368.01

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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.