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Finding the Fourth Proportional to 153.52, 210.48 and 151.92

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Solution

The fourth proportional to 153.52, 210.48 and 151.92 is: 208.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.52 : 210.48 = 151.92 : x
  2. Step 2: Convert to fraction form
    153.52/210.48 = 151.92/x
  3. Step 3: Cross multiply
    153.52x = 210.48 × 151.92
  4. Step 4: Simplify right side
    153.52x = 31,976.12
  5. Step 5: Solve for x
    x = 31,976.12/153.52
  6. Step 6: Final answer
    x = 208.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.