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Finding the Fourth Proportional to 583.62, 805.05 and 409.74

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Solution

The fourth proportional to 583.62, 805.05 and 409.74 is: 565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.62 : 805.05 = 409.74 : x
  2. Step 2: Convert to fraction form
    583.62/805.05 = 409.74/x
  3. Step 3: Cross multiply
    583.62x = 805.05 × 409.74
  4. Step 4: Simplify right side
    583.62x = 329,861.19
  5. Step 5: Solve for x
    x = 329,861.19/583.62
  6. Step 6: Final answer
    x = 565.20

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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.