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Finding the Fourth Proportional to 442.30, 610.40 and 368.49

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Solution

The fourth proportional to 442.30, 610.40 and 368.49 is: 508.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.30 : 610.40 = 368.49 : x
  2. Step 2: Convert to fraction form
    442.30/610.40 = 368.49/x
  3. Step 3: Cross multiply
    442.30x = 610.40 × 368.49
  4. Step 4: Simplify right side
    442.30x = 224,926.30
  5. Step 5: Solve for x
    x = 224,926.30/442.30
  6. Step 6: Final answer
    x = 508.54

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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.