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Finding the Fourth Proportional to 264.64, 393.86 and 263.84

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Solution

The fourth proportional to 264.64, 393.86 and 263.84 is: 392.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.64 : 393.86 = 263.84 : x
  2. Step 2: Convert to fraction form
    264.64/393.86 = 263.84/x
  3. Step 3: Cross multiply
    264.64x = 393.86 × 263.84
  4. Step 4: Simplify right side
    264.64x = 103,916.02
  5. Step 5: Solve for x
    x = 103,916.02/264.64
  6. Step 6: Final answer
    x = 392.67

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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.