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Finding the Fourth Proportional to 529.84, 794.75 and 217.45

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Solution

The fourth proportional to 529.84, 794.75 and 217.45 is: 326.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.84 : 794.75 = 217.45 : x
  2. Step 2: Convert to fraction form
    529.84/794.75 = 217.45/x
  3. Step 3: Cross multiply
    529.84x = 794.75 × 217.45
  4. Step 4: Simplify right side
    529.84x = 172,818.29
  5. Step 5: Solve for x
    x = 172,818.29/529.84
  6. Step 6: Final answer
    x = 326.17

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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.