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Finding the Fourth Proportional to 662.64, 909.36 and 659.52

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Solution

The fourth proportional to 662.64, 909.36 and 659.52 is: 905.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.64 : 909.36 = 659.52 : x
  2. Step 2: Convert to fraction form
    662.64/909.36 = 659.52/x
  3. Step 3: Cross multiply
    662.64x = 909.36 × 659.52
  4. Step 4: Simplify right side
    662.64x = 599,741.11
  5. Step 5: Solve for x
    x = 599,741.11/662.64
  6. Step 6: Final answer
    x = 905.08

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.