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Finding the Fourth Proportional to 597.74, 824.59 and 387.95

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Solution

The fourth proportional to 597.74, 824.59 and 387.95 is: 535.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.74 : 824.59 = 387.95 : x
  2. Step 2: Convert to fraction form
    597.74/824.59 = 387.95/x
  3. Step 3: Cross multiply
    597.74x = 824.59 × 387.95
  4. Step 4: Simplify right side
    597.74x = 319,899.69
  5. Step 5: Solve for x
    x = 319,899.69/597.74
  6. Step 6: Final answer
    x = 535.18

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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.