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Finding the Fourth Proportional to 583.76, 805.80 and 563.60

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Solution

The fourth proportional to 583.76, 805.80 and 563.60 is: 777.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.76 : 805.80 = 563.60 : x
  2. Step 2: Convert to fraction form
    583.76/805.80 = 563.60/x
  3. Step 3: Cross multiply
    583.76x = 805.80 × 563.60
  4. Step 4: Simplify right side
    583.76x = 454,148.88
  5. Step 5: Solve for x
    x = 454,148.88/583.76
  6. Step 6: Final answer
    x = 777.97

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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.