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Finding the Fourth Proportional to 434.73, 651.95 and 126.50

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Solution

The fourth proportional to 434.73, 651.95 and 126.50 is: 189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.73 : 651.95 = 126.50 : x
  2. Step 2: Convert to fraction form
    434.73/651.95 = 126.50/x
  3. Step 3: Cross multiply
    434.73x = 651.95 × 126.50
  4. Step 4: Simplify right side
    434.73x = 82,468.26
  5. Step 5: Solve for x
    x = 82,468.26/434.73
  6. Step 6: Final answer
    x = 189.70

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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.