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Finding the Fourth Proportional to 169.52, 253.06 and 154.40

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Solution

The fourth proportional to 169.52, 253.06 and 154.40 is: 230.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.52 : 253.06 = 154.40 : x
  2. Step 2: Convert to fraction form
    169.52/253.06 = 154.40/x
  3. Step 3: Cross multiply
    169.52x = 253.06 × 154.40
  4. Step 4: Simplify right side
    169.52x = 39,072.46
  5. Step 5: Solve for x
    x = 39,072.46/169.52
  6. Step 6: Final answer
    x = 230.49

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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.