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Finding the Fourth Proportional to 529.79, 797.49 and 393.71

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Solution

The fourth proportional to 529.79, 797.49 and 393.71 is: 592.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.79 : 797.49 = 393.71 : x
  2. Step 2: Convert to fraction form
    529.79/797.49 = 393.71/x
  3. Step 3: Cross multiply
    529.79x = 797.49 × 393.71
  4. Step 4: Simplify right side
    529.79x = 313,975.80
  5. Step 5: Solve for x
    x = 313,975.80/529.79
  6. Step 6: Final answer
    x = 592.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.