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Finding the Fourth Proportional to 288.71, 432.74 and 124.13

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Solution

The fourth proportional to 288.71, 432.74 and 124.13 is: 186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.71 : 432.74 = 124.13 : x
  2. Step 2: Convert to fraction form
    288.71/432.74 = 124.13/x
  3. Step 3: Cross multiply
    288.71x = 432.74 × 124.13
  4. Step 4: Simplify right side
    288.71x = 53,713.23
  5. Step 5: Solve for x
    x = 53,713.23/288.71
  6. Step 6: Final answer
    x = 186.05

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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.