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Finding the Fourth Proportional to 708.99, 978.33 and 534.03

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Solution

The fourth proportional to 708.99, 978.33 and 534.03 is: 736.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.99 : 978.33 = 534.03 : x
  2. Step 2: Convert to fraction form
    708.99/978.33 = 534.03/x
  3. Step 3: Cross multiply
    708.99x = 978.33 × 534.03
  4. Step 4: Simplify right side
    708.99x = 522,457.57
  5. Step 5: Solve for x
    x = 522,457.57/708.99
  6. Step 6: Final answer
    x = 736.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.