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Finding the Fourth Proportional to 640.93, 883.75 and 547.51

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Solution

The fourth proportional to 640.93, 883.75 and 547.51 is: 754.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.93 : 883.75 = 547.51 : x
  2. Step 2: Convert to fraction form
    640.93/883.75 = 547.51/x
  3. Step 3: Cross multiply
    640.93x = 883.75 × 547.51
  4. Step 4: Simplify right side
    640.93x = 483,861.96
  5. Step 5: Solve for x
    x = 483,861.96/640.93
  6. Step 6: Final answer
    x = 754.94

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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.