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Finding the Fourth Proportional to 575.02, 858.63 and 451.90

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Solution

The fourth proportional to 575.02, 858.63 and 451.90 is: 674.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.02 : 858.63 = 451.90 : x
  2. Step 2: Convert to fraction form
    575.02/858.63 = 451.90/x
  3. Step 3: Cross multiply
    575.02x = 858.63 × 451.90
  4. Step 4: Simplify right side
    575.02x = 388,014.90
  5. Step 5: Solve for x
    x = 388,014.90/575.02
  6. Step 6: Final answer
    x = 674.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.