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Finding the Fourth Proportional to 659.18, 909.63 and 364.43

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Solution

The fourth proportional to 659.18, 909.63 and 364.43 is: 502.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.18 : 909.63 = 364.43 : x
  2. Step 2: Convert to fraction form
    659.18/909.63 = 364.43/x
  3. Step 3: Cross multiply
    659.18x = 909.63 × 364.43
  4. Step 4: Simplify right side
    659.18x = 331,498.40
  5. Step 5: Solve for x
    x = 331,498.40/659.18
  6. Step 6: Final answer
    x = 502.89

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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.