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Finding the Fourth Proportional to 514.90, 772.36 and 283.74

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Solution

The fourth proportional to 514.90, 772.36 and 283.74 is: 425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.90 : 772.36 = 283.74 : x
  2. Step 2: Convert to fraction form
    514.90/772.36 = 283.74/x
  3. Step 3: Cross multiply
    514.90x = 772.36 × 283.74
  4. Step 4: Simplify right side
    514.90x = 219,151.08
  5. Step 5: Solve for x
    x = 219,151.08/514.90
  6. Step 6: Final answer
    x = 425.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.