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Finding the Fourth Proportional to 151.99, 210.24 and 127.39

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Solution

The fourth proportional to 151.99, 210.24 and 127.39 is: 176.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.99 : 210.24 = 127.39 : x
  2. Step 2: Convert to fraction form
    151.99/210.24 = 127.39/x
  3. Step 3: Cross multiply
    151.99x = 210.24 × 127.39
  4. Step 4: Simplify right side
    151.99x = 26,782.47
  5. Step 5: Solve for x
    x = 26,782.47/151.99
  6. Step 6: Final answer
    x = 176.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.