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Finding the Fourth Proportional to 793.50, 1,187.01 and 788.10

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Solution

The fourth proportional to 793.50, 1,187.01 and 788.10 is: 1,178.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.50 : 1,187.01 = 788.10 : x
  2. Step 2: Convert to fraction form
    793.50/1,187.01 = 788.10/x
  3. Step 3: Cross multiply
    793.50x = 1,187.01 × 788.10
  4. Step 4: Simplify right side
    793.50x = 935,482.58
  5. Step 5: Solve for x
    x = 935,482.58/793.50
  6. Step 6: Final answer
    x = 1,178.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.