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Finding the Fourth Proportional to 454.77, 627.35 and 330.23

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Solution

The fourth proportional to 454.77, 627.35 and 330.23 is: 455.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.77 : 627.35 = 330.23 : x
  2. Step 2: Convert to fraction form
    454.77/627.35 = 330.23/x
  3. Step 3: Cross multiply
    454.77x = 627.35 × 330.23
  4. Step 4: Simplify right side
    454.77x = 207,169.21
  5. Step 5: Solve for x
    x = 207,169.21/454.77
  6. Step 6: Final answer
    x = 455.55

Related Problems

Find fourth proportional to 227.38, 313.68 and 165.11
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Double scale
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1.5x scale

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.