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Finding the Fourth Proportional to 906.04, 1,250.31 and 513.04

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Solution

The fourth proportional to 906.04, 1,250.31 and 513.04 is: 707.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.04 : 1,250.31 = 513.04 : x
  2. Step 2: Convert to fraction form
    906.04/1,250.31 = 513.04/x
  3. Step 3: Cross multiply
    906.04x = 1,250.31 × 513.04
  4. Step 4: Simplify right side
    906.04x = 641,459.04
  5. Step 5: Solve for x
    x = 641,459.04/906.04
  6. Step 6: Final answer
    x = 707.98

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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.