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Finding the Fourth Proportional to 988.52, 1,483.08 and 622.76

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Solution

The fourth proportional to 988.52, 1,483.08 and 622.76 is: 934.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.52 : 1,483.08 = 622.76 : x
  2. Step 2: Convert to fraction form
    988.52/1,483.08 = 622.76/x
  3. Step 3: Cross multiply
    988.52x = 1,483.08 × 622.76
  4. Step 4: Simplify right side
    988.52x = 923,602.90
  5. Step 5: Solve for x
    x = 923,602.90/988.52
  6. Step 6: Final answer
    x = 934.33

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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.