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Finding the Fourth Proportional to 434.70, 652.41 and 339.12

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Solution

The fourth proportional to 434.70, 652.41 and 339.12 is: 508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.70 : 652.41 = 339.12 : x
  2. Step 2: Convert to fraction form
    434.70/652.41 = 339.12/x
  3. Step 3: Cross multiply
    434.70x = 652.41 × 339.12
  4. Step 4: Simplify right side
    434.70x = 221,245.28
  5. Step 5: Solve for x
    x = 221,245.28/434.70
  6. Step 6: Final answer
    x = 508.96

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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.