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Finding the Fourth Proportional to 584.68, 805.80 and 418.90

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Solution

The fourth proportional to 584.68, 805.80 and 418.90 is: 577.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.68 : 805.80 = 418.90 : x
  2. Step 2: Convert to fraction form
    584.68/805.80 = 418.90/x
  3. Step 3: Cross multiply
    584.68x = 805.80 × 418.90
  4. Step 4: Simplify right side
    584.68x = 337,549.62
  5. Step 5: Solve for x
    x = 337,549.62/584.68
  6. Step 6: Final answer
    x = 577.32

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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.