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Finding the Fourth Proportional to 653.23, 906.11 and 630.55

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Solution

The fourth proportional to 653.23, 906.11 and 630.55 is: 874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.23 : 906.11 = 630.55 : x
  2. Step 2: Convert to fraction form
    653.23/906.11 = 630.55/x
  3. Step 3: Cross multiply
    653.23x = 906.11 × 630.55
  4. Step 4: Simplify right side
    653.23x = 571,347.66
  5. Step 5: Solve for x
    x = 571,347.66/653.23
  6. Step 6: Final answer
    x = 874.65

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.