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Finding the Fourth Proportional to 573.84, 857.34 and 554.72

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Solution

The fourth proportional to 573.84, 857.34 and 554.72 is: 828.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.84 : 857.34 = 554.72 : x
  2. Step 2: Convert to fraction form
    573.84/857.34 = 554.72/x
  3. Step 3: Cross multiply
    573.84x = 857.34 × 554.72
  4. Step 4: Simplify right side
    573.84x = 475,583.64
  5. Step 5: Solve for x
    x = 475,583.64/573.84
  6. Step 6: Final answer
    x = 828.77

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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.