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Finding the Fourth Proportional to 659.36, 909.91 and 364.63

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Solution

The fourth proportional to 659.36, 909.91 and 364.63 is: 503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.36 : 909.91 = 364.63 : x
  2. Step 2: Convert to fraction form
    659.36/909.91 = 364.63/x
  3. Step 3: Cross multiply
    659.36x = 909.91 × 364.63
  4. Step 4: Simplify right side
    659.36x = 331,780.48
  5. Step 5: Solve for x
    x = 331,780.48/659.36
  6. Step 6: Final answer
    x = 503.19

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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.