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Finding the Fourth Proportional to 366.75, 505.74 and 253.44

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Solution

The fourth proportional to 366.75, 505.74 and 253.44 is: 349.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.75 : 505.74 = 253.44 : x
  2. Step 2: Convert to fraction form
    366.75/505.74 = 253.44/x
  3. Step 3: Cross multiply
    366.75x = 505.74 × 253.44
  4. Step 4: Simplify right side
    366.75x = 128,174.75
  5. Step 5: Solve for x
    x = 128,174.75/366.75
  6. Step 6: Final answer
    x = 349.49

Related Problems

Find fourth proportional to 183.38, 252.87 and 126.72
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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.