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Finding the Fourth Proportional to 288.70, 432.96 and 167.02

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Solution

The fourth proportional to 288.70, 432.96 and 167.02 is: 250.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.70 : 432.96 = 167.02 : x
  2. Step 2: Convert to fraction form
    288.70/432.96 = 167.02/x
  3. Step 3: Cross multiply
    288.70x = 432.96 × 167.02
  4. Step 4: Simplify right side
    288.70x = 72,312.98
  5. Step 5: Solve for x
    x = 72,312.98/288.70
  6. Step 6: Final answer
    x = 250.48

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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.