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Finding the Fourth Proportional to 688.88, 950.72 and 453.01

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Solution

The fourth proportional to 688.88, 950.72 and 453.01 is: 625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.88 : 950.72 = 453.01 : x
  2. Step 2: Convert to fraction form
    688.88/950.72 = 453.01/x
  3. Step 3: Cross multiply
    688.88x = 950.72 × 453.01
  4. Step 4: Simplify right side
    688.88x = 430,685.67
  5. Step 5: Solve for x
    x = 430,685.67/688.88
  6. Step 6: Final answer
    x = 625.20

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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.