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Finding the Fourth Proportional to 1,397.80, 2,095.14 and 575.08

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Solution

The fourth proportional to 1,397.80, 2,095.14 and 575.08 is: 861.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.80 : 2,095.14 = 575.08 : x
  2. Step 2: Convert to fraction form
    1,397.80/2,095.14 = 575.08/x
  3. Step 3: Cross multiply
    1,397.80x = 2,095.14 × 575.08
  4. Step 4: Simplify right side
    1,397.80x = 1,204,873.11
  5. Step 5: Solve for x
    x = 1,204,873.11/1,397.80
  6. Step 6: Final answer
    x = 861.98

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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.