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Finding the Fourth Proportional to 409.95, 565.37 and 322.47

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Solution

The fourth proportional to 409.95, 565.37 and 322.47 is: 444.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.95 : 565.37 = 322.47 : x
  2. Step 2: Convert to fraction form
    409.95/565.37 = 322.47/x
  3. Step 3: Cross multiply
    409.95x = 565.37 × 322.47
  4. Step 4: Simplify right side
    409.95x = 182,314.86
  5. Step 5: Solve for x
    x = 182,314.86/409.95
  6. Step 6: Final answer
    x = 444.72

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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.