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Finding the Fourth Proportional to 265.62, 399.65 and 157.49

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Solution

The fourth proportional to 265.62, 399.65 and 157.49 is: 236.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.62 : 399.65 = 157.49 : x
  2. Step 2: Convert to fraction form
    265.62/399.65 = 157.49/x
  3. Step 3: Cross multiply
    265.62x = 399.65 × 157.49
  4. Step 4: Simplify right side
    265.62x = 62,938.09
  5. Step 5: Solve for x
    x = 62,938.09/265.62
  6. Step 6: Final answer
    x = 236.95

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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.