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Finding the Fourth Proportional to 336.42, 503.37 and 291.31

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Solution

The fourth proportional to 336.42, 503.37 and 291.31 is: 435.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.42 : 503.37 = 291.31 : x
  2. Step 2: Convert to fraction form
    336.42/503.37 = 291.31/x
  3. Step 3: Cross multiply
    336.42x = 503.37 × 291.31
  4. Step 4: Simplify right side
    336.42x = 146,636.71
  5. Step 5: Solve for x
    x = 146,636.71/336.42
  6. Step 6: Final answer
    x = 435.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.