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Finding the Fourth Proportional to 434.19, 651.28 and 202.95

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Solution

The fourth proportional to 434.19, 651.28 and 202.95 is: 304.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.19 : 651.28 = 202.95 : x
  2. Step 2: Convert to fraction form
    434.19/651.28 = 202.95/x
  3. Step 3: Cross multiply
    434.19x = 651.28 × 202.95
  4. Step 4: Simplify right side
    434.19x = 132,176.77
  5. Step 5: Solve for x
    x = 132,176.77/434.19
  6. Step 6: Final answer
    x = 304.42

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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.