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Finding the Fourth Proportional to 415.95, 573.42 and 297.55

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Solution

The fourth proportional to 415.95, 573.42 and 297.55 is: 410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.95 : 573.42 = 297.55 : x
  2. Step 2: Convert to fraction form
    415.95/573.42 = 297.55/x
  3. Step 3: Cross multiply
    415.95x = 573.42 × 297.55
  4. Step 4: Simplify right side
    415.95x = 170,621.12
  5. Step 5: Solve for x
    x = 170,621.12/415.95
  6. Step 6: Final answer
    x = 410.20

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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.