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Finding the Fourth Proportional to 451.42, 623.04 and 276.76

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Solution

The fourth proportional to 451.42, 623.04 and 276.76 is: 381.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.42 : 623.04 = 276.76 : x
  2. Step 2: Convert to fraction form
    451.42/623.04 = 276.76/x
  3. Step 3: Cross multiply
    451.42x = 623.04 × 276.76
  4. Step 4: Simplify right side
    451.42x = 172,432.55
  5. Step 5: Solve for x
    x = 172,432.55/451.42
  6. Step 6: Final answer
    x = 381.98

Related Problems

Find fourth proportional to 225.71, 311.52 and 138.38
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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.