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Finding the Fourth Proportional to 153.39, 210.80 and 146.26

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Solution

The fourth proportional to 153.39, 210.80 and 146.26 is: 200.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.39 : 210.80 = 146.26 : x
  2. Step 2: Convert to fraction form
    153.39/210.80 = 146.26/x
  3. Step 3: Cross multiply
    153.39x = 210.80 × 146.26
  4. Step 4: Simplify right side
    153.39x = 30,831.05
  5. Step 5: Solve for x
    x = 30,831.05/153.39
  6. Step 6: Final answer
    x = 200.99

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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.