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Finding the Fourth Proportional to 288.77, 432.95 and 144.59

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Solution

The fourth proportional to 288.77, 432.95 and 144.59 is: 216.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.77 : 432.95 = 144.59 : x
  2. Step 2: Convert to fraction form
    288.77/432.95 = 144.59/x
  3. Step 3: Cross multiply
    288.77x = 432.95 × 144.59
  4. Step 4: Simplify right side
    288.77x = 62,597.35
  5. Step 5: Solve for x
    x = 62,597.35/288.77
  6. Step 6: Final answer
    x = 216.78

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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.