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Finding the Fourth Proportional to 659.85, 910.62 and 365.15

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Solution

The fourth proportional to 659.85, 910.62 and 365.15 is: 503.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.85 : 910.62 = 365.15 : x
  2. Step 2: Convert to fraction form
    659.85/910.62 = 365.15/x
  3. Step 3: Cross multiply
    659.85x = 910.62 × 365.15
  4. Step 4: Simplify right side
    659.85x = 332,506.51
  5. Step 5: Solve for x
    x = 332,506.51/659.85
  6. Step 6: Final answer
    x = 503.91

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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.