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Finding the Fourth Proportional to 506.89, 700.30 and 499.15

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Solution

The fourth proportional to 506.89, 700.30 and 499.15 is: 689.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.89 : 700.30 = 499.15 : x
  2. Step 2: Convert to fraction form
    506.89/700.30 = 499.15/x
  3. Step 3: Cross multiply
    506.89x = 700.30 × 499.15
  4. Step 4: Simplify right side
    506.89x = 349,554.75
  5. Step 5: Solve for x
    x = 349,554.75/506.89
  6. Step 6: Final answer
    x = 689.61

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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.