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Finding the Fourth Proportional to 472.34, 707.43 and 424.82

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Solution

The fourth proportional to 472.34, 707.43 and 424.82 is: 636.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.34 : 707.43 = 424.82 : x
  2. Step 2: Convert to fraction form
    472.34/707.43 = 424.82/x
  3. Step 3: Cross multiply
    472.34x = 707.43 × 424.82
  4. Step 4: Simplify right side
    472.34x = 300,530.41
  5. Step 5: Solve for x
    x = 300,530.41/472.34
  6. Step 6: Final answer
    x = 636.26

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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.