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Finding the Fourth Proportional to 653.65, 901.94 and 404.84

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Solution

The fourth proportional to 653.65, 901.94 and 404.84 is: 558.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.65 : 901.94 = 404.84 : x
  2. Step 2: Convert to fraction form
    653.65/901.94 = 404.84/x
  3. Step 3: Cross multiply
    653.65x = 901.94 × 404.84
  4. Step 4: Simplify right side
    653.65x = 365,141.62
  5. Step 5: Solve for x
    x = 365,141.62/653.65
  6. Step 6: Final answer
    x = 558.62

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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.