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Finding the Fourth Proportional to 145.29, 218.18 and 144.17

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Solution

The fourth proportional to 145.29, 218.18 and 144.17 is: 216.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.29 : 218.18 = 144.17 : x
  2. Step 2: Convert to fraction form
    145.29/218.18 = 144.17/x
  3. Step 3: Cross multiply
    145.29x = 218.18 × 144.17
  4. Step 4: Simplify right side
    145.29x = 31,455.01
  5. Step 5: Solve for x
    x = 31,455.01/145.29
  6. Step 6: Final answer
    x = 216.50

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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.