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Finding the Fourth Proportional to 336.56, 502.40 and 267.45

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Solution

The fourth proportional to 336.56, 502.40 and 267.45 is: 399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.56 : 502.40 = 267.45 : x
  2. Step 2: Convert to fraction form
    336.56/502.40 = 267.45/x
  3. Step 3: Cross multiply
    336.56x = 502.40 × 267.45
  4. Step 4: Simplify right side
    336.56x = 134,368.49
  5. Step 5: Solve for x
    x = 134,368.49/336.56
  6. Step 6: Final answer
    x = 399.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.