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Finding the Fourth Proportional to 434.78, 652.15 and 174.70

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Solution

The fourth proportional to 434.78, 652.15 and 174.70 is: 262.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.78 : 652.15 = 174.70 : x
  2. Step 2: Convert to fraction form
    434.78/652.15 = 174.70/x
  3. Step 3: Cross multiply
    434.78x = 652.15 × 174.70
  4. Step 4: Simplify right side
    434.78x = 113,927.34
  5. Step 5: Solve for x
    x = 113,927.34/434.78
  6. Step 6: Final answer
    x = 262.04

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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.