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Finding the Fourth Proportional to 903.05, 1,244.36 and 693.22

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Solution

The fourth proportional to 903.05, 1,244.36 and 693.22 is: 955.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.05 : 1,244.36 = 693.22 : x
  2. Step 2: Convert to fraction form
    903.05/1,244.36 = 693.22/x
  3. Step 3: Cross multiply
    903.05x = 1,244.36 × 693.22
  4. Step 4: Simplify right side
    903.05x = 862,613.86
  5. Step 5: Solve for x
    x = 862,613.86/903.05
  6. Step 6: Final answer
    x = 955.22

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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.