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Finding the Fourth Proportional to 453.64, 626.03 and 278.99

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Solution

The fourth proportional to 453.64, 626.03 and 278.99 is: 385.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.64 : 626.03 = 278.99 : x
  2. Step 2: Convert to fraction form
    453.64/626.03 = 278.99/x
  3. Step 3: Cross multiply
    453.64x = 626.03 × 278.99
  4. Step 4: Simplify right side
    453.64x = 174,656.11
  5. Step 5: Solve for x
    x = 174,656.11/453.64
  6. Step 6: Final answer
    x = 385.01

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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.