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Finding the Fourth Proportional to 153.02, 229.71 and 127.65

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Solution

The fourth proportional to 153.02, 229.71 and 127.65 is: 191.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.02 : 229.71 = 127.65 : x
  2. Step 2: Convert to fraction form
    153.02/229.71 = 127.65/x
  3. Step 3: Cross multiply
    153.02x = 229.71 × 127.65
  4. Step 4: Simplify right side
    153.02x = 29,322.48
  5. Step 5: Solve for x
    x = 29,322.48/153.02
  6. Step 6: Final answer
    x = 191.63

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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.