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Finding the Fourth Proportional to 153.04, 229.58 and 71.89

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Solution

The fourth proportional to 153.04, 229.58 and 71.89 is: 107.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.04 : 229.58 = 71.89 : x
  2. Step 2: Convert to fraction form
    153.04/229.58 = 71.89/x
  3. Step 3: Cross multiply
    153.04x = 229.58 × 71.89
  4. Step 4: Simplify right side
    153.04x = 16,504.25
  5. Step 5: Solve for x
    x = 16,504.25/153.04
  6. Step 6: Final answer
    x = 107.84

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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.