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Finding the Fourth Proportional to 1,553.96, 2,330.38 and 513.77

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Solution

The fourth proportional to 1,553.96, 2,330.38 and 513.77 is: 770.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.96 : 2,330.38 = 513.77 : x
  2. Step 2: Convert to fraction form
    1,553.96/2,330.38 = 513.77/x
  3. Step 3: Cross multiply
    1,553.96x = 2,330.38 × 513.77
  4. Step 4: Simplify right side
    1,553.96x = 1,197,266.40
  5. Step 5: Solve for x
    x = 1,197,266.40/1,553.96
  6. Step 6: Final answer
    x = 770.46

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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.