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Finding the Fourth Proportional to 302.68, 453.40 and 156.22

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Solution

The fourth proportional to 302.68, 453.40 and 156.22 is: 234.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.68 : 453.40 = 156.22 : x
  2. Step 2: Convert to fraction form
    302.68/453.40 = 156.22/x
  3. Step 3: Cross multiply
    302.68x = 453.40 × 156.22
  4. Step 4: Simplify right side
    302.68x = 70,830.15
  5. Step 5: Solve for x
    x = 70,830.15/302.68
  6. Step 6: Final answer
    x = 234.01

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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.