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Finding the Fourth Proportional to 837.18, 1,155.15 and 575.10

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Solution

The fourth proportional to 837.18, 1,155.15 and 575.10 is: 793.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.18 : 1,155.15 = 575.10 : x
  2. Step 2: Convert to fraction form
    837.18/1,155.15 = 575.10/x
  3. Step 3: Cross multiply
    837.18x = 1,155.15 × 575.10
  4. Step 4: Simplify right side
    837.18x = 664,326.77
  5. Step 5: Solve for x
    x = 664,326.77/837.18
  6. Step 6: Final answer
    x = 793.53

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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.