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Finding the Fourth Proportional to 562.05, 841.71 and 379.80

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Solution

The fourth proportional to 562.05, 841.71 and 379.80 is: 568.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.05 : 841.71 = 379.80 : x
  2. Step 2: Convert to fraction form
    562.05/841.71 = 379.80/x
  3. Step 3: Cross multiply
    562.05x = 841.71 × 379.80
  4. Step 4: Simplify right side
    562.05x = 319,681.46
  5. Step 5: Solve for x
    x = 319,681.46/562.05
  6. Step 6: Final answer
    x = 568.78

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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.