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Finding the Fourth Proportional to 651.39, 898.20 and 493.98

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Solution

The fourth proportional to 651.39, 898.20 and 493.98 is: 681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.39 : 898.20 = 493.98 : x
  2. Step 2: Convert to fraction form
    651.39/898.20 = 493.98/x
  3. Step 3: Cross multiply
    651.39x = 898.20 × 493.98
  4. Step 4: Simplify right side
    651.39x = 443,692.84
  5. Step 5: Solve for x
    x = 443,692.84/651.39
  6. Step 6: Final answer
    x = 681.15

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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.