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Finding the Fourth Proportional to 906.32, 1,249.05 and 740

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Solution

The fourth proportional to 906.32, 1,249.05 and 740 is: 1,019.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.32 : 1,249.05 = 740 : x
  2. Step 2: Convert to fraction form
    906.32/1,249.05 = 740/x
  3. Step 3: Cross multiply
    906.32x = 1,249.05 × 740
  4. Step 4: Simplify right side
    906.32x = 924,297
  5. Step 5: Solve for x
    x = 924,297/906.32
  6. Step 6: Final answer
    x = 1,019.84

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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.