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Finding the Fourth Proportional to 454.68, 627.75 and 396.77

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Solution

The fourth proportional to 454.68, 627.75 and 396.77 is: 547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.68 : 627.75 = 396.77 : x
  2. Step 2: Convert to fraction form
    454.68/627.75 = 396.77/x
  3. Step 3: Cross multiply
    454.68x = 627.75 × 396.77
  4. Step 4: Simplify right side
    454.68x = 249,069.23
  5. Step 5: Solve for x
    x = 249,069.23/454.68
  6. Step 6: Final answer
    x = 547.79

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Find fourth proportional to 227.34, 313.88 and 198.38
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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.