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Finding the Fourth Proportional to 264.89, 397.30 and 72.53

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Solution

The fourth proportional to 264.89, 397.30 and 72.53 is: 108.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.89 : 397.30 = 72.53 : x
  2. Step 2: Convert to fraction form
    264.89/397.30 = 72.53/x
  3. Step 3: Cross multiply
    264.89x = 397.30 × 72.53
  4. Step 4: Simplify right side
    264.89x = 28,816.17
  5. Step 5: Solve for x
    x = 28,816.17/264.89
  6. Step 6: Final answer
    x = 108.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.