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Finding the Fourth Proportional to 454.76, 627.56 and 247.76

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Solution

The fourth proportional to 454.76, 627.56 and 247.76 is: 341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.76 : 627.56 = 247.76 : x
  2. Step 2: Convert to fraction form
    454.76/627.56 = 247.76/x
  3. Step 3: Cross multiply
    454.76x = 627.56 × 247.76
  4. Step 4: Simplify right side
    454.76x = 155,484.27
  5. Step 5: Solve for x
    x = 155,484.27/454.76
  6. Step 6: Final answer
    x = 341.90

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Find fourth proportional to 227.38, 313.78 and 123.88
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Double scale
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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.