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Finding the Fourth Proportional to 434.42, 651.64 and 229.40

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Solution

The fourth proportional to 434.42, 651.64 and 229.40 is: 344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.42 : 651.64 = 229.40 : x
  2. Step 2: Convert to fraction form
    434.42/651.64 = 229.40/x
  3. Step 3: Cross multiply
    434.42x = 651.64 × 229.40
  4. Step 4: Simplify right side
    434.42x = 149,486.22
  5. Step 5: Solve for x
    x = 149,486.22/434.42
  6. Step 6: Final answer
    x = 344.11

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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.