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Finding the Fourth Proportional to 573.32, 858.08 and 490.70

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Solution

The fourth proportional to 573.32, 858.08 and 490.70 is: 734.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.32 : 858.08 = 490.70 : x
  2. Step 2: Convert to fraction form
    573.32/858.08 = 490.70/x
  3. Step 3: Cross multiply
    573.32x = 858.08 × 490.70
  4. Step 4: Simplify right side
    573.32x = 421,059.86
  5. Step 5: Solve for x
    x = 421,059.86/573.32
  6. Step 6: Final answer
    x = 734.42

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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.