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Finding the Fourth Proportional to 573.11, 854.81 and 555.80

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Solution

The fourth proportional to 573.11, 854.81 and 555.80 is: 828.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.11 : 854.81 = 555.80 : x
  2. Step 2: Convert to fraction form
    573.11/854.81 = 555.80/x
  3. Step 3: Cross multiply
    573.11x = 854.81 × 555.80
  4. Step 4: Simplify right side
    573.11x = 475,096.34
  5. Step 5: Solve for x
    x = 475,096.34/573.11
  6. Step 6: Final answer
    x = 828.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.