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Finding the Fourth Proportional to 697.13, 1,045.65 and 301.82

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Solution

The fourth proportional to 697.13, 1,045.65 and 301.82 is: 452.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.13 : 1,045.65 = 301.82 : x
  2. Step 2: Convert to fraction form
    697.13/1,045.65 = 301.82/x
  3. Step 3: Cross multiply
    697.13x = 1,045.65 × 301.82
  4. Step 4: Simplify right side
    697.13x = 315,598.08
  5. Step 5: Solve for x
    x = 315,598.08/697.13
  6. Step 6: Final answer
    x = 452.71

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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.