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Finding the Fourth Proportional to 409.42, 565.42 and 335.98

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Solution

The fourth proportional to 409.42, 565.42 and 335.98 is: 464.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.42 : 565.42 = 335.98 : x
  2. Step 2: Convert to fraction form
    409.42/565.42 = 335.98/x
  3. Step 3: Cross multiply
    409.42x = 565.42 × 335.98
  4. Step 4: Simplify right side
    409.42x = 189,969.81
  5. Step 5: Solve for x
    x = 189,969.81/409.42
  6. Step 6: Final answer
    x = 464.00

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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.