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Finding the Fourth Proportional to 707.46, 1,060.58 and 274.38

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Solution

The fourth proportional to 707.46, 1,060.58 and 274.38 is: 411.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.46 : 1,060.58 = 274.38 : x
  2. Step 2: Convert to fraction form
    707.46/1,060.58 = 274.38/x
  3. Step 3: Cross multiply
    707.46x = 1,060.58 × 274.38
  4. Step 4: Simplify right side
    707.46x = 291,000.57
  5. Step 5: Solve for x
    x = 291,000.57/707.46
  6. Step 6: Final answer
    x = 411.33

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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.