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Finding the Fourth Proportional to 653.75, 901.91 and 404.63

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Solution

The fourth proportional to 653.75, 901.91 and 404.63 is: 558.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.75 : 901.91 = 404.63 : x
  2. Step 2: Convert to fraction form
    653.75/901.91 = 404.63/x
  3. Step 3: Cross multiply
    653.75x = 901.91 × 404.63
  4. Step 4: Simplify right side
    653.75x = 364,933.31
  5. Step 5: Solve for x
    x = 364,933.31/653.75
  6. Step 6: Final answer
    x = 558.22

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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.