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Finding the Fourth Proportional to 454.87, 627.28 and 297.45

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Solution

The fourth proportional to 454.87, 627.28 and 297.45 is: 410.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.87 : 627.28 = 297.45 : x
  2. Step 2: Convert to fraction form
    454.87/627.28 = 297.45/x
  3. Step 3: Cross multiply
    454.87x = 627.28 × 297.45
  4. Step 4: Simplify right side
    454.87x = 186,583.18
  5. Step 5: Solve for x
    x = 186,583.18/454.87
  6. Step 6: Final answer
    x = 410.19

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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.