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Finding the Fourth Proportional to 1,482.59, 2,045.81 and 853.20

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Solution

The fourth proportional to 1,482.59, 2,045.81 and 853.20 is: 1,177.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,482.59 : 2,045.81 = 853.20 : x
  2. Step 2: Convert to fraction form
    1,482.59/2,045.81 = 853.20/x
  3. Step 3: Cross multiply
    1,482.59x = 2,045.81 × 853.20
  4. Step 4: Simplify right side
    1,482.59x = 1,745,487.23
  5. Step 5: Solve for x
    x = 1,745,487.23/1,482.59
  6. Step 6: Final answer
    x = 1,177.32

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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.