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Finding the Fourth Proportional to 173.28, 259.95 and 51.53

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Solution

The fourth proportional to 173.28, 259.95 and 51.53 is: 77.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.28 : 259.95 = 51.53 : x
  2. Step 2: Convert to fraction form
    173.28/259.95 = 51.53/x
  3. Step 3: Cross multiply
    173.28x = 259.95 × 51.53
  4. Step 4: Simplify right side
    173.28x = 13,394.71
  5. Step 5: Solve for x
    x = 13,394.71/173.28
  6. Step 6: Final answer
    x = 77.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.