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Finding the Fourth Proportional to 434.95, 652.76 and 161.30

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Solution

The fourth proportional to 434.95, 652.76 and 161.30 is: 242.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.95 : 652.76 = 161.30 : x
  2. Step 2: Convert to fraction form
    434.95/652.76 = 161.30/x
  3. Step 3: Cross multiply
    434.95x = 652.76 × 161.30
  4. Step 4: Simplify right side
    434.95x = 105,290.19
  5. Step 5: Solve for x
    x = 105,290.19/434.95
  6. Step 6: Final answer
    x = 242.07

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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.