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Finding the Fourth Proportional to 653.34, 895.07 and 628.68

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Solution

The fourth proportional to 653.34, 895.07 and 628.68 is: 861.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.34 : 895.07 = 628.68 : x
  2. Step 2: Convert to fraction form
    653.34/895.07 = 628.68/x
  3. Step 3: Cross multiply
    653.34x = 895.07 × 628.68
  4. Step 4: Simplify right side
    653.34x = 562,709.46
  5. Step 5: Solve for x
    x = 562,709.46/653.34
  6. Step 6: Final answer
    x = 861.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.