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Finding the Fourth Proportional to 654.85, 903.69 and 360.11

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Solution

The fourth proportional to 654.85, 903.69 and 360.11 is: 496.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.85 : 903.69 = 360.11 : x
  2. Step 2: Convert to fraction form
    654.85/903.69 = 360.11/x
  3. Step 3: Cross multiply
    654.85x = 903.69 × 360.11
  4. Step 4: Simplify right side
    654.85x = 325,430.07
  5. Step 5: Solve for x
    x = 325,430.07/654.85
  6. Step 6: Final answer
    x = 496.95

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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.