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Finding the Fourth Proportional to 500.99, 687.63 and 459.45

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Solution

The fourth proportional to 500.99, 687.63 and 459.45 is: 630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.99 : 687.63 = 459.45 : x
  2. Step 2: Convert to fraction form
    500.99/687.63 = 459.45/x
  3. Step 3: Cross multiply
    500.99x = 687.63 × 459.45
  4. Step 4: Simplify right side
    500.99x = 315,931.60
  5. Step 5: Solve for x
    x = 315,931.60/500.99
  6. Step 6: Final answer
    x = 630.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.