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Finding the Fourth Proportional to 653, 899.70 and 455.96

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Solution

The fourth proportional to 653, 899.70 and 455.96 is: 628.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    653 : 899.70 = 455.96 : x
  2. Step 2: Convert to fraction form
    653/899.70 = 455.96/x
  3. Step 3: Cross multiply
    653x = 899.70 × 455.96
  4. Step 4: Simplify right side
    653x = 410,227.21
  5. Step 5: Solve for x
    x = 410,227.21/653
  6. Step 6: Final answer
    x = 628.22

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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.