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Finding the Fourth Proportional to 484.79, 669.03 and 274.98

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Solution

The fourth proportional to 484.79, 669.03 and 274.98 is: 379.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.79 : 669.03 = 274.98 : x
  2. Step 2: Convert to fraction form
    484.79/669.03 = 274.98/x
  3. Step 3: Cross multiply
    484.79x = 669.03 × 274.98
  4. Step 4: Simplify right side
    484.79x = 183,971.35
  5. Step 5: Solve for x
    x = 183,971.35/484.79
  6. Step 6: Final answer
    x = 379.49

Related Problems

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Double scale
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1.5x scale

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.