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Finding the Fourth Proportional to 507.13, 698.39 and 456.91

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Solution

The fourth proportional to 507.13, 698.39 and 456.91 is: 629.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.13 : 698.39 = 456.91 : x
  2. Step 2: Convert to fraction form
    507.13/698.39 = 456.91/x
  3. Step 3: Cross multiply
    507.13x = 698.39 × 456.91
  4. Step 4: Simplify right side
    507.13x = 319,101.37
  5. Step 5: Solve for x
    x = 319,101.37/507.13
  6. Step 6: Final answer
    x = 629.23

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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.