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Finding the Fourth Proportional to 51.47, 77.16 and 32.18

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Solution

The fourth proportional to 51.47, 77.16 and 32.18 is: 48.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.47 : 77.16 = 32.18 : x
  2. Step 2: Convert to fraction form
    51.47/77.16 = 32.18/x
  3. Step 3: Cross multiply
    51.47x = 77.16 × 32.18
  4. Step 4: Simplify right side
    51.47x = 2,483.20
  5. Step 5: Solve for x
    x = 2,483.20/51.47
  6. Step 6: Final answer
    x = 48.25

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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.