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Finding the Fourth Proportional to 656.08, 905.48 and 545.37

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Solution

The fourth proportional to 656.08, 905.48 and 545.37 is: 752.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.08 : 905.48 = 545.37 : x
  2. Step 2: Convert to fraction form
    656.08/905.48 = 545.37/x
  3. Step 3: Cross multiply
    656.08x = 905.48 × 545.37
  4. Step 4: Simplify right side
    656.08x = 493,821.63
  5. Step 5: Solve for x
    x = 493,821.63/656.08
  6. Step 6: Final answer
    x = 752.69

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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.