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Finding the Fourth Proportional to 355.60, 503.80 and 355.60

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Solution

The fourth proportional to 355.60, 503.80 and 355.60 is: 503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.60 : 503.80 = 355.60 : x
  2. Step 2: Convert to fraction form
    355.60/503.80 = 355.60/x
  3. Step 3: Cross multiply
    355.60x = 503.80 × 355.60
  4. Step 4: Simplify right side
    355.60x = 179,151.28
  5. Step 5: Solve for x
    x = 179,151.28/355.60
  6. Step 6: Final answer
    x = 503.80

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.