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Finding the Fourth Proportional to 535.99, 739.63 and 315.06

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Solution

The fourth proportional to 535.99, 739.63 and 315.06 is: 434.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.99 : 739.63 = 315.06 : x
  2. Step 2: Convert to fraction form
    535.99/739.63 = 315.06/x
  3. Step 3: Cross multiply
    535.99x = 739.63 × 315.06
  4. Step 4: Simplify right side
    535.99x = 233,027.83
  5. Step 5: Solve for x
    x = 233,027.83/535.99
  6. Step 6: Final answer
    x = 434.76

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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.