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Finding the Fourth Proportional to 594.49, 819.80 and 469.90

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Solution

The fourth proportional to 594.49, 819.80 and 469.90 is: 647.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.49 : 819.80 = 469.90 : x
  2. Step 2: Convert to fraction form
    594.49/819.80 = 469.90/x
  3. Step 3: Cross multiply
    594.49x = 819.80 × 469.90
  4. Step 4: Simplify right side
    594.49x = 385,219.92
  5. Step 5: Solve for x
    x = 385,219.92/594.49
  6. Step 6: Final answer
    x = 647.99

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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.