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Finding the Fourth Proportional to 434.32, 651.40 and 160.40

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Solution

The fourth proportional to 434.32, 651.40 and 160.40 is: 240.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.32 : 651.40 = 160.40 : x
  2. Step 2: Convert to fraction form
    434.32/651.40 = 160.40/x
  3. Step 3: Cross multiply
    434.32x = 651.40 × 160.40
  4. Step 4: Simplify right side
    434.32x = 104,484.56
  5. Step 5: Solve for x
    x = 104,484.56/434.32
  6. Step 6: Final answer
    x = 240.57

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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.