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Finding the Fourth Proportional to 597.42, 824.73 and 387.90

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Solution

The fourth proportional to 597.42, 824.73 and 387.90 is: 535.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.42 : 824.73 = 387.90 : x
  2. Step 2: Convert to fraction form
    597.42/824.73 = 387.90/x
  3. Step 3: Cross multiply
    597.42x = 824.73 × 387.90
  4. Step 4: Simplify right side
    597.42x = 319,912.77
  5. Step 5: Solve for x
    x = 319,912.77/597.42
  6. Step 6: Final answer
    x = 535.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.