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Finding the Fourth Proportional to 434.69, 651.11 and 397.34

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Solution

The fourth proportional to 434.69, 651.11 and 397.34 is: 595.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.69 : 651.11 = 397.34 : x
  2. Step 2: Convert to fraction form
    434.69/651.11 = 397.34/x
  3. Step 3: Cross multiply
    434.69x = 651.11 × 397.34
  4. Step 4: Simplify right side
    434.69x = 258,708.79
  5. Step 5: Solve for x
    x = 258,708.79/434.69
  6. Step 6: Final answer
    x = 595.16

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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.