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Finding the Fourth Proportional to 153.17, 211.13 and 130.84

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Solution

The fourth proportional to 153.17, 211.13 and 130.84 is: 180.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.17 : 211.13 = 130.84 : x
  2. Step 2: Convert to fraction form
    153.17/211.13 = 130.84/x
  3. Step 3: Cross multiply
    153.17x = 211.13 × 130.84
  4. Step 4: Simplify right side
    153.17x = 27,624.25
  5. Step 5: Solve for x
    x = 27,624.25/153.17
  6. Step 6: Final answer
    x = 180.35

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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.