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Finding the Fourth Proportional to 583.00, 803.12 and 490.25

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Solution

The fourth proportional to 583.00, 803.12 and 490.25 is: 675.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.00 : 803.12 = 490.25 : x
  2. Step 2: Convert to fraction form
    583.00/803.12 = 490.25/x
  3. Step 3: Cross multiply
    583.00x = 803.12 × 490.25
  4. Step 4: Simplify right side
    583.00x = 393,729.14
  5. Step 5: Solve for x
    x = 393,729.14/583.00
  6. Step 6: Final answer
    x = 675.35

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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.