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Finding the Fourth Proportional to 599.40, 822.15 and 575.10

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Solution

The fourth proportional to 599.40, 822.15 and 575.10 is: 788.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.40 : 822.15 = 575.10 : x
  2. Step 2: Convert to fraction form
    599.40/822.15 = 575.10/x
  3. Step 3: Cross multiply
    599.40x = 822.15 × 575.10
  4. Step 4: Simplify right side
    599.40x = 472,818.47
  5. Step 5: Solve for x
    x = 472,818.47/599.40
  6. Step 6: Final answer
    x = 788.82

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.