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Finding the Fourth Proportional to 1,091, 1,505.60 and 593.65

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Solution

The fourth proportional to 1,091, 1,505.60 and 593.65 is: 819.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091 : 1,505.60 = 593.65 : x
  2. Step 2: Convert to fraction form
    1,091/1,505.60 = 593.65/x
  3. Step 3: Cross multiply
    1,091x = 1,505.60 × 593.65
  4. Step 4: Simplify right side
    1,091x = 893,799.44
  5. Step 5: Solve for x
    x = 893,799.44/1,091
  6. Step 6: Final answer
    x = 819.25

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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.