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Finding the Fourth Proportional to 364.75, 503.40 and 209.50

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Solution

The fourth proportional to 364.75, 503.40 and 209.50 is: 289.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.75 : 503.40 = 209.50 : x
  2. Step 2: Convert to fraction form
    364.75/503.40 = 209.50/x
  3. Step 3: Cross multiply
    364.75x = 503.40 × 209.50
  4. Step 4: Simplify right side
    364.75x = 105,462.30
  5. Step 5: Solve for x
    x = 105,462.30/364.75
  6. Step 6: Final answer
    x = 289.14

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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.