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Finding the Fourth Proportional to 365.64, 503.01 and 355.39

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Solution

The fourth proportional to 365.64, 503.01 and 355.39 is: 488.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.64 : 503.01 = 355.39 : x
  2. Step 2: Convert to fraction form
    365.64/503.01 = 355.39/x
  3. Step 3: Cross multiply
    365.64x = 503.01 × 355.39
  4. Step 4: Simplify right side
    365.64x = 178,763.47
  5. Step 5: Solve for x
    x = 178,763.47/365.64
  6. Step 6: Final answer
    x = 488.91

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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.