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Finding the Fourth Proportional to 573.27, 788.72 and 442.05

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Solution

The fourth proportional to 573.27, 788.72 and 442.05 is: 608.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.27 : 788.72 = 442.05 : x
  2. Step 2: Convert to fraction form
    573.27/788.72 = 442.05/x
  3. Step 3: Cross multiply
    573.27x = 788.72 × 442.05
  4. Step 4: Simplify right side
    573.27x = 348,651.47
  5. Step 5: Solve for x
    x = 348,651.47/573.27
  6. Step 6: Final answer
    x = 608.18

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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.