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Finding the Fourth Proportional to 459.92, 690.36 and 297.04

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Solution

The fourth proportional to 459.92, 690.36 and 297.04 is: 445.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.92 : 690.36 = 297.04 : x
  2. Step 2: Convert to fraction form
    459.92/690.36 = 297.04/x
  3. Step 3: Cross multiply
    459.92x = 690.36 × 297.04
  4. Step 4: Simplify right side
    459.92x = 205,064.53
  5. Step 5: Solve for x
    x = 205,064.53/459.92
  6. Step 6: Final answer
    x = 445.87

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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.