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Finding the Fourth Proportional to 706.82, 1,060.18 and 290.53

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Solution

The fourth proportional to 706.82, 1,060.18 and 290.53 is: 435.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.82 : 1,060.18 = 290.53 : x
  2. Step 2: Convert to fraction form
    706.82/1,060.18 = 290.53/x
  3. Step 3: Cross multiply
    706.82x = 1,060.18 × 290.53
  4. Step 4: Simplify right side
    706.82x = 308,014.10
  5. Step 5: Solve for x
    x = 308,014.10/706.82
  6. Step 6: Final answer
    x = 435.77

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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.