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Finding the Fourth Proportional to 145.84, 217.23 and 145.56

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Solution

The fourth proportional to 145.84, 217.23 and 145.56 is: 216.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.84 : 217.23 = 145.56 : x
  2. Step 2: Convert to fraction form
    145.84/217.23 = 145.56/x
  3. Step 3: Cross multiply
    145.84x = 217.23 × 145.56
  4. Step 4: Simplify right side
    145.84x = 31,620.00
  5. Step 5: Solve for x
    x = 31,620.00/145.84
  6. Step 6: Final answer
    x = 216.81

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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.