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Finding the Fourth Proportional to 442.52, 610.40 and 287.26

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Solution

The fourth proportional to 442.52, 610.40 and 287.26 is: 396.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.52 : 610.40 = 287.26 : x
  2. Step 2: Convert to fraction form
    442.52/610.40 = 287.26/x
  3. Step 3: Cross multiply
    442.52x = 610.40 × 287.26
  4. Step 4: Simplify right side
    442.52x = 175,343.50
  5. Step 5: Solve for x
    x = 175,343.50/442.52
  6. Step 6: Final answer
    x = 396.24

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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.