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Finding the Fourth Proportional to 153.41, 213.15 and 151.47

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Solution

The fourth proportional to 153.41, 213.15 and 151.47 is: 210.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.41 : 213.15 = 151.47 : x
  2. Step 2: Convert to fraction form
    153.41/213.15 = 151.47/x
  3. Step 3: Cross multiply
    153.41x = 213.15 × 151.47
  4. Step 4: Simplify right side
    153.41x = 32,285.83
  5. Step 5: Solve for x
    x = 32,285.83/153.41
  6. Step 6: Final answer
    x = 210.46

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.