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Finding the Fourth Proportional to 897.24, 1,346.40 and 682.20

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Solution

The fourth proportional to 897.24, 1,346.40 and 682.20 is: 1,023.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.24 : 1,346.40 = 682.20 : x
  2. Step 2: Convert to fraction form
    897.24/1,346.40 = 682.20/x
  3. Step 3: Cross multiply
    897.24x = 1,346.40 × 682.20
  4. Step 4: Simplify right side
    897.24x = 918,514.08
  5. Step 5: Solve for x
    x = 918,514.08/897.24
  6. Step 6: Final answer
    x = 1,023.71

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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.