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Finding the Fourth Proportional to 573.31, 790.27 and 479.89

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Solution

The fourth proportional to 573.31, 790.27 and 479.89 is: 661.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.31 : 790.27 = 479.89 : x
  2. Step 2: Convert to fraction form
    573.31/790.27 = 479.89/x
  3. Step 3: Cross multiply
    573.31x = 790.27 × 479.89
  4. Step 4: Simplify right side
    573.31x = 379,245.16
  5. Step 5: Solve for x
    x = 379,245.16/573.31
  6. Step 6: Final answer
    x = 661.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.