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Finding the Fourth Proportional to 59.45, 88.66 and 51.22

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Solution

The fourth proportional to 59.45, 88.66 and 51.22 is: 76.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.45 : 88.66 = 51.22 : x
  2. Step 2: Convert to fraction form
    59.45/88.66 = 51.22/x
  3. Step 3: Cross multiply
    59.45x = 88.66 × 51.22
  4. Step 4: Simplify right side
    59.45x = 4,541.34
  5. Step 5: Solve for x
    x = 4,541.34/59.45
  6. Step 6: Final answer
    x = 76.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.