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Finding the Fourth Proportional to 336.42, 503.28 and 288.90

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Solution

The fourth proportional to 336.42, 503.28 and 288.90 is: 432.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.42 : 503.28 = 288.90 : x
  2. Step 2: Convert to fraction form
    336.42/503.28 = 288.90/x
  3. Step 3: Cross multiply
    336.42x = 503.28 × 288.90
  4. Step 4: Simplify right side
    336.42x = 145,397.59
  5. Step 5: Solve for x
    x = 145,397.59/336.42
  6. Step 6: Final answer
    x = 432.19

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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.