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Finding the Fourth Proportional to 1,019.22, 1,529.06 and 434.22

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Solution

The fourth proportional to 1,019.22, 1,529.06 and 434.22 is: 651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.22 : 1,529.06 = 434.22 : x
  2. Step 2: Convert to fraction form
    1,019.22/1,529.06 = 434.22/x
  3. Step 3: Cross multiply
    1,019.22x = 1,529.06 × 434.22
  4. Step 4: Simplify right side
    1,019.22x = 663,946.26
  5. Step 5: Solve for x
    x = 663,946.26/1,019.22
  6. Step 6: Final answer
    x = 651.43

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1.5x scale

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.