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Finding the Fourth Proportional to 436.34, 651.12 and 397.53

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Solution

The fourth proportional to 436.34, 651.12 and 397.53 is: 593.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.34 : 651.12 = 397.53 : x
  2. Step 2: Convert to fraction form
    436.34/651.12 = 397.53/x
  3. Step 3: Cross multiply
    436.34x = 651.12 × 397.53
  4. Step 4: Simplify right side
    436.34x = 258,839.73
  5. Step 5: Solve for x
    x = 258,839.73/436.34
  6. Step 6: Final answer
    x = 593.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.