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Finding the Fourth Proportional to 708.90, 1,063.34 and 247.02

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Solution

The fourth proportional to 708.90, 1,063.34 and 247.02 is: 370.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.90 : 1,063.34 = 247.02 : x
  2. Step 2: Convert to fraction form
    708.90/1,063.34 = 247.02/x
  3. Step 3: Cross multiply
    708.90x = 1,063.34 × 247.02
  4. Step 4: Simplify right side
    708.90x = 262,666.25
  5. Step 5: Solve for x
    x = 262,666.25/708.90
  6. Step 6: Final answer
    x = 370.53

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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.