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Finding the Fourth Proportional to 484.19, 668.19 and 274.37

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Solution

The fourth proportional to 484.19, 668.19 and 274.37 is: 378.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.19 : 668.19 = 274.37 : x
  2. Step 2: Convert to fraction form
    484.19/668.19 = 274.37/x
  3. Step 3: Cross multiply
    484.19x = 668.19 × 274.37
  4. Step 4: Simplify right side
    484.19x = 183,331.29
  5. Step 5: Solve for x
    x = 183,331.29/484.19
  6. Step 6: Final answer
    x = 378.64

Related Problems

Find fourth proportional to 242.10, 334.10 and 137.19
Half scale
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Double scale
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Similar ratio
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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.