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Finding the Fourth Proportional to 145.24, 218.65 and 124.36

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Solution

The fourth proportional to 145.24, 218.65 and 124.36 is: 187.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.24 : 218.65 = 124.36 : x
  2. Step 2: Convert to fraction form
    145.24/218.65 = 124.36/x
  3. Step 3: Cross multiply
    145.24x = 218.65 × 124.36
  4. Step 4: Simplify right side
    145.24x = 27,191.31
  5. Step 5: Solve for x
    x = 27,191.31/145.24
  6. Step 6: Final answer
    x = 187.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.