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Finding the Fourth Proportional to 709.64, 1,063.74 and 434.96

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Solution

The fourth proportional to 709.64, 1,063.74 and 434.96 is: 652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.64 : 1,063.74 = 434.96 : x
  2. Step 2: Convert to fraction form
    709.64/1,063.74 = 434.96/x
  3. Step 3: Cross multiply
    709.64x = 1,063.74 × 434.96
  4. Step 4: Simplify right side
    709.64x = 462,684.35
  5. Step 5: Solve for x
    x = 462,684.35/709.64
  6. Step 6: Final answer
    x = 652.00

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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.