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Finding the Fourth Proportional to 313.08, 466.84 and 274.72

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Solution

The fourth proportional to 313.08, 466.84 and 274.72 is: 409.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.08 : 466.84 = 274.72 : x
  2. Step 2: Convert to fraction form
    313.08/466.84 = 274.72/x
  3. Step 3: Cross multiply
    313.08x = 466.84 × 274.72
  4. Step 4: Simplify right side
    313.08x = 128,250.28
  5. Step 5: Solve for x
    x = 128,250.28/313.08
  6. Step 6: Final answer
    x = 409.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.