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Finding the Fourth Proportional to 364.60, 503.34 and 317.62

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Solution

The fourth proportional to 364.60, 503.34 and 317.62 is: 438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.60 : 503.34 = 317.62 : x
  2. Step 2: Convert to fraction form
    364.60/503.34 = 317.62/x
  3. Step 3: Cross multiply
    364.60x = 503.34 × 317.62
  4. Step 4: Simplify right side
    364.60x = 159,870.85
  5. Step 5: Solve for x
    x = 159,870.85/364.60
  6. Step 6: Final answer
    x = 438.48

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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.