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Finding the Fourth Proportional to 265.48, 398.49 and 162.79

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Solution

The fourth proportional to 265.48, 398.49 and 162.79 is: 244.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.48 : 398.49 = 162.79 : x
  2. Step 2: Convert to fraction form
    265.48/398.49 = 162.79/x
  3. Step 3: Cross multiply
    265.48x = 398.49 × 162.79
  4. Step 4: Simplify right side
    265.48x = 64,870.19
  5. Step 5: Solve for x
    x = 64,870.19/265.48
  6. Step 6: Final answer
    x = 244.35

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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.