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Finding the Fourth Proportional to 511.08, 704.78 and 417.53

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Solution

The fourth proportional to 511.08, 704.78 and 417.53 is: 575.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.08 : 704.78 = 417.53 : x
  2. Step 2: Convert to fraction form
    511.08/704.78 = 417.53/x
  3. Step 3: Cross multiply
    511.08x = 704.78 × 417.53
  4. Step 4: Simplify right side
    511.08x = 294,266.79
  5. Step 5: Solve for x
    x = 294,266.79/511.08
  6. Step 6: Final answer
    x = 575.77

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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.