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Finding the Fourth Proportional to 573.36, 855.84 and 492.72

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Solution

The fourth proportional to 573.36, 855.84 and 492.72 is: 735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.36 : 855.84 = 492.72 : x
  2. Step 2: Convert to fraction form
    573.36/855.84 = 492.72/x
  3. Step 3: Cross multiply
    573.36x = 855.84 × 492.72
  4. Step 4: Simplify right side
    573.36x = 421,689.48
  5. Step 5: Solve for x
    x = 421,689.48/573.36
  6. Step 6: Final answer
    x = 735.47

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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.