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Finding the Fourth Proportional to 435.39, 652.68 and 146.63

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Solution

The fourth proportional to 435.39, 652.68 and 146.63 is: 219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.39 : 652.68 = 146.63 : x
  2. Step 2: Convert to fraction form
    435.39/652.68 = 146.63/x
  3. Step 3: Cross multiply
    435.39x = 652.68 × 146.63
  4. Step 4: Simplify right side
    435.39x = 95,699.21
  5. Step 5: Solve for x
    x = 95,699.21/435.39
  6. Step 6: Final answer
    x = 219.80

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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.