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Finding the Fourth Proportional to 904.37, 1,249.12 and 655.29

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Solution

The fourth proportional to 904.37, 1,249.12 and 655.29 is: 905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.37 : 1,249.12 = 655.29 : x
  2. Step 2: Convert to fraction form
    904.37/1,249.12 = 655.29/x
  3. Step 3: Cross multiply
    904.37x = 1,249.12 × 655.29
  4. Step 4: Simplify right side
    904.37x = 818,536.66
  5. Step 5: Solve for x
    x = 818,536.66/904.37
  6. Step 6: Final answer
    x = 905.10

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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.